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Themed collection Catalysis & biocatalysis in OBC

121 items - Showing page 1 of 2
Review Article

The roles of Lewis acidic additives in organotransition metal catalysis

We present recent advances in prominent organotransition metal-catalysed reactions in which Lewis acid cocatalysts are employed to increase catalyst activity or selectivity. The roles of Lewis acids are discussed.

Graphical abstract: The roles of Lewis acidic additives in organotransition metal catalysis
From the themed collection: Catalysis & biocatalysis in OBC
Review Article

N-Alkyl amide synthesis via N-alkylation of amides with alcohols

The present review summarizes the recent development of N-alkylation of amides with alcohols according to the classification of catalysts.

Graphical abstract: N-Alkyl amide synthesis via N-alkylation of amides with alcohols
From the themed collection: Catalysis & biocatalysis in OBC
Review Article

Beyond the traditional roles of Ag in catalysis: the transmetalating ability of organosilver(I) species in Pd-catalysed reactions

The role of silver salts in Pd-catalysed C–C bond forming transformations.

Graphical abstract: Beyond the traditional roles of Ag in catalysis: the transmetalating ability of organosilver(i) species in Pd-catalysed reactions
From the themed collection: Catalysis & biocatalysis in OBC
Review Article

The challenge of using isopropylamine as an amine donor in transaminase catalysed reactions

Factors that affect the efficiency of amine transaminase catalyzed reactions using isopropylamine as an amine donor.

Graphical abstract: The challenge of using isopropylamine as an amine donor in transaminase catalysed reactions
From the themed collection: Catalysis & biocatalysis in OBC
Review Article

Recent advances in transition metal-catalyzed C(sp2)–H nitration

This review updates advances of direct C(sp2)–H nitration for the synthesis of nitroaromatic compounds and the mechanisms during the past decade.

Graphical abstract: Recent advances in transition metal-catalyzed C(sp2)–H nitration
From the themed collection: Catalysis & biocatalysis in OBC
Review Article

Recent developments in photochemical reactions of diazo compounds

Chemistry of diazo compounds is dominated by transition metal catalysis but recently, photoinitiated reactions of diazo compounds have attracted a lot of attention. This mini-review describes recent discoveries on the reactivity of diazo compounds under light irradiation.

Graphical abstract: Recent developments in photochemical reactions of diazo compounds
From the themed collection: Synthetic methodology in OBC
Review Article

The catalytic Mitsunobu reaction: a critical analysis of the current state-of-the-art

This Review article provides a summary and critical metrics-based analysis of recently developed catalytic Mitsunobu reactions.

Graphical abstract: The catalytic Mitsunobu reaction: a critical analysis of the current state-of-the-art
From the themed collection: Catalysis & biocatalysis in OBC
Review Article

Indium(III) as π-acid catalyst for the electrophilic activation of carbon–carbon unsaturated systems

This review focuses on indium(III) as a π-acid for the activation of C–C unsaturated systems (alkynes, alkenes, and allenes) in organic synthesis.

Graphical abstract: Indium(iii) as π-acid catalyst for the electrophilic activation of carbon–carbon unsaturated systems
From the themed collection: Catalysis & biocatalysis in OBC
Review Article

Dibenzofuran-4,6-bis(oxazoline) (DBFOX). A novel trans-chelating bis(oxazoline) ligand for asymmetric reactions

The trans-chelating bis(oxazoline) ligand (R,R)-4,6-dibenzofurandiyl-2,2′-bis(4-phenyloxazoline) [(R,R)-DBFOX/Ph] coordinates metal ions to give C2-symmetric complexes which effectively catalyze a variety of asymmetric reactions.

Graphical abstract: Dibenzofuran-4,6-bis(oxazoline) (DBFOX). A novel trans-chelating bis(oxazoline) ligand for asymmetric reactions
From the themed collection: Catalysis & biocatalysis in OBC
Review Article

Asymmetric iodine catalysis-mediated enantioselective oxidative transformations

The implementation of chiral iodine catalysis has tremendously been developed in the field of asymmetric synthesis over the past decade.

Graphical abstract: Asymmetric iodine catalysis-mediated enantioselective oxidative transformations
From the themed collection: Catalysis & biocatalysis in OBC
Review Article

Development and application of chiral spirocyclic phosphoric acids in asymmetric catalysis

This review describes the synthetic methods for the preparation of chiral spirocyclic phosphoric acids (SPAs), and their dynamically developing application for catalytic enantioselective transformations.

Graphical abstract: Development and application of chiral spirocyclic phosphoric acids in asymmetric catalysis
From the themed collection: Catalysis & biocatalysis in OBC
Review Article

Halo-substituted benzenesulfonyls and benzenesulfinates: convenient sources of arenes in metal-catalyzed C–C bond formation reactions for the straightforward access to halo-substituted arenes

The use of halo-substituted ArSO2R as an aryl source in metal-catalyzed C–C bond formation reactions presents several advantages, as the reaction often proceeds without cleavage of the C–halo bonds.

Graphical abstract: Halo-substituted benzenesulfonyls and benzenesulfinates: convenient sources of arenes in metal-catalyzed C–C bond formation reactions for the straightforward access to halo-substituted arenes
From the themed collection: Catalysis & biocatalysis in OBC
Review Article

Chiral proton-transfer shuttle catalysts for carbene insertion reactions

The development of chiral proton-transfer shuttles provides a totally new enantiocontrol strategy for transition metal-catalyzed asymmetric carbene insertion reactions.

Graphical abstract: Chiral proton-transfer shuttle catalysts for carbene insertion reactions
From the themed collection: Catalysis & biocatalysis in OBC
Review Article

Recent advances in iodine mediated electrochemical oxidative cross-coupling

This review article gives an overview of the recent development of iodine mediated electrochemical oxidative coupling reactions.

Graphical abstract: Recent advances in iodine mediated electrochemical oxidative cross-coupling
From the themed collection: Catalysis & biocatalysis in OBC
Review Article

Catalytic asymmetric enamine protonation reaction

Recent advances in catalytic enantioselective enamine protonation for the synthesis of optically active carbonyl compounds are summarized in this review.

Graphical abstract: Catalytic asymmetric enamine protonation reaction
From the themed collection: Catalysis & biocatalysis in OBC
Open Access Review Article

Enhanced structural diversity in terpenoid biosynthesis: enzymes, substrates and cofactors

Terpenoid structural diversity is enhanced by multiproduct enzymes. Biosynthesis can be altered by switch in substrates, cofactors and pH.

Graphical abstract: Enhanced structural diversity in terpenoid biosynthesis: enzymes, substrates and cofactors
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Enantioselective synthesis of chiral heterocyclic biaryls via asymmetric Suzuki–Miyaura cross-coupling of 3-bromopyridine derivatives

A series of chiral heterocyclic biaryls with a pyridyl moiety were prepared in moderate to good yields with up to 92% ee via asymmetric Suzuki–Miyaura coupling.

Graphical abstract: Enantioselective synthesis of chiral heterocyclic biaryls via asymmetric Suzuki–Miyaura cross-coupling of 3-bromopyridine derivatives
From the themed collection: Synthetic methodology in OBC
Communication

Iron catalysed selective reduction of esters to alcohols

Exposure of BIANFeCl2 to nBuLi generates an anionic complex which is a competent catalyst for the selective reduction of esters to alcohols.

Graphical abstract: Iron catalysed selective reduction of esters to alcohols
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Copper-catalyzed arene amination in pure aqueous ammonia

A simple protocol for copper-catalyzed arene amination using aqueous ammonia without any additional ligands and organic coordinating solvents has been developed.

Graphical abstract: Copper-catalyzed arene amination in pure aqueous ammonia
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Iron-catalyzed protodehalogenation of alkyl and aryl halides using hydrosilanes

A simple and efficient iron-catalyzed protodehalogenation of alkyl and aryl halides using phenylhydrosilane is disclosed.

Graphical abstract: Iron-catalyzed protodehalogenation of alkyl and aryl halides using hydrosilanes
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Selective alkyl ether cleavage by cationic bis(phosphine)iridium complexes

Simple cationic bis(phosphine)iridium complexes are shown to be highly selective catalysts for ether cleavage with silanes. Benzylic ethers can be cleaved under mild conditions in the presence of reductively-labile functional groups.

Graphical abstract: Selective alkyl ether cleavage by cationic bis(phosphine)iridium complexes
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Organocatalytic asymmetric Michael/hemiketalization/acyl transfer reaction of 1,3-propanediones with (E)-2-(2-nitrovinyl)phenols

An organocatalytic asymmetric cascade Michael/hemiketalization/acyl transfer reaction between (E)-2-(2-nitrovinyl)phenols and 1,3-propanediones is disclosed to generate products having keto, ester and nitro functionalities.

Graphical abstract: Organocatalytic asymmetric Michael/hemiketalization/acyl transfer reaction of 1,3-propanediones with (E)-2-(2-nitrovinyl)phenols
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Copper-catalyzed carbene/alkyne metathesis terminated with the Buchner reaction: synthesis of dihydrocyclohepta[b]indoles

A copper-catalyzed carbene/alkyne metathesis reaction of alkyne-tethered diazoacetates is reported, which provides dihydrocyclohepta[b]indole skeletons under mild reaction conditions.

Graphical abstract: Copper-catalyzed carbene/alkyne metathesis terminated with the Buchner reaction: synthesis of dihydrocyclohepta[b]indoles
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Catalytic asymmetric aza-Michael addition of fumaric monoacids with multifunctional thiourea/boronic acids

Chiral multifunctional thiourea/boronic acid catalysts enabled the synthesis of N-hydroxyaspartate derivatives applicable for KAHA amidation through acid-β selective aza-Michael addition.

Graphical abstract: Catalytic asymmetric aza-Michael addition of fumaric monoacids with multifunctional thiourea/boronic acids
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Biochemical studies of a β-1,4-rhamnoslytransferase from Streptococcus pneumonia serotype 23F

A new β-rhamnoslytransferase Cps23FT from Streptococcus pneumonia serotype 23F was functionally explored for the first time.

Graphical abstract: Biochemical studies of a β-1,4-rhamnoslytransferase from Streptococcus pneumonia serotype 23F
From the themed collection: Chemical biology in OBC
Communication

Efficient synthesis of chiral β-hydroxy sulfones via iridium-catalyzed hydrogenation

A highly efficient Ir-catalyzed asymmetric hydrogenation of prochiral β-keto sulfones was successfully developed, affording a series of chiral β-hydroxy sulfones with excellent results (up to >99% conversion, 99% yield, >99% ee, and 20 000 TON).

Graphical abstract: Efficient synthesis of chiral β-hydroxy sulfones via iridium-catalyzed hydrogenation
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Rhodium catalysed enantioselective synthesis of mono-(halo)-methyl-cyclopropanes

The catalytic asymmetric synthesis of mono-fluoro-, -chloro- and -bromomethyl-1,2-diaryl ester cyclopropanes is described.

Graphical abstract: Rhodium catalysed enantioselective synthesis of mono-(halo)-methyl-cyclopropanes
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Conversion of aldimines to secondary amines using iron-catalysed hydrosilylation

Hydrosilylation of imines was achieved using a redox non-innocent Fe-BIAN catalyst and employing the inexpensive trialkoxysilane (EtO)3SiH.

Graphical abstract: Conversion of aldimines to secondary amines using iron-catalysed hydrosilylation
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Organocatalytic asymmetric synthesis of highly substituted pyrrolidines bearing a stereogenic quaternary centre at the 3-position

An organocatalytic asymmetric cascade reaction has been developed between N-tosyl aminomethyl enones and trans-α-cyano-α,β-unsaturated ketones for the synthesis of highly substituted pyrrolidines having a stereogenic quaternary centre at the 3-position.

Graphical abstract: Organocatalytic asymmetric synthesis of highly substituted pyrrolidines bearing a stereogenic quaternary centre at the 3-position
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Direct enantio- and diastereoselective Mannich reactions of isatin-derived ketimines with oxo-indanecarboxylates catalyzed by chiral thiourea derived from hydroquinidine

A series of 3-substituted 3-amino-oxindoles were constructed by this protocol in excellent yields (92–99%) with high enantioselectivities (85–99% ee) and diastereoselectivities (up to >99 : 1 dr).

Graphical abstract: Direct enantio- and diastereoselective Mannich reactions of isatin-derived ketimines with oxo-indanecarboxylates catalyzed by chiral thiourea derived from hydroquinidine
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Asymmetric synthesis of β-amino ketones by using cinchona alkaloid-based chiral phase transfer catalysts

A highly enantioselective nucleophilic addition of ketones to versatile imines catalyzed by chiral PTC has been developed, and the process affords the Mannich reaction products with tertiary stereocenters in good to high yields and excellent enantioselectivities. This protocol is effective for gram scale reaction.

Graphical abstract: Asymmetric synthesis of β-amino ketones by using cinchona alkaloid-based chiral phase transfer catalysts
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Base-catalyzed selective esterification of alcohols with unactivated esters

tert-Butyl esters were identified as efficient esterification reagents for base-catalyzed esterification reactions, and mechanistic studies provided evidence of an exchange of the tert-butyl alkoxide metal with alcohol.

Graphical abstract: Base-catalyzed selective esterification of alcohols with unactivated esters
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Direct synthesis of indenes via a rhodium-catalyzed multicomponent Csp2–H annulation reaction

A highly efficient, direct and multicomponent route for the synthesis of indenes is reported herein.

Graphical abstract: Direct synthesis of indenes via a rhodium-catalyzed multicomponent Csp2–H annulation reaction
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Enantioselective biocatalytic formal α-amination of hexanoic acid to L-norleucine

A three-step one-pot biocatalytic cascade enabled the enantioselective formal α-amination of hexanoic acid to L-norleucine in >97% ee.

Graphical abstract: Enantioselective biocatalytic formal α-amination of hexanoic acid to l-norleucine
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Iron(III)-catalyzed radical α,β-aminophosphinoylation of styrenes with diphenylphosphine oxides and anilines

A Fe-catalyzed highly regioselective α,β-difunctionalization of vinylarenes with diphenylphosphine oxides and anilines is disclosed, in which α,β-aminophosphinoylation is efficiently and conveniently constructed with good functional compatibility and a broad substrate scope.

Graphical abstract: Iron(iii)-catalyzed radical α,β-aminophosphinoylation of styrenes with diphenylphosphine oxides and anilines
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Palladium-catalyzed heck-type cascade cyclization of (Z)-1-iodo-1,6-dienes with N-tosyl hydrazones

A new way to synthesize tetrahydropyridine derivatives bearing a terminal alkene due to highly regioselective β-H elimination of alkylpalladium species.

Graphical abstract: Palladium-catalyzed heck-type cascade cyclization of (Z)-1-iodo-1,6-dienes with N-tosyl hydrazones
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Gold(I)-catalysed high-yielding synthesis of indenes by direct Csp3–H bond activation

A catalytic, practical and high-yielding procedure for the synthesis of indenes by direct Csp3–H activation under gold(I) catalysis was developed.

Graphical abstract: Gold(i)-catalysed high-yielding synthesis of indenes by direct Csp3–H bond activation
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Metal-free visible-light synthesis of quaternary α-perfluoroalkyl aldehydes via an enamine intermediate

Visible-light induced perfluoroalkylation of the α-position of aldehydes via enamines.

Graphical abstract: Metal-free visible-light synthesis of quaternary α-perfluoroalkyl aldehydes via an enamine intermediate
From the themed collection: Synthetic methodology in OBC
Communication

Rhodium(III)-catalyzed three-component cascade synthesis of 6H-benzo[c]chromenes through C–H activation

An efficient procedure for 6H-benzo[c]chromenes via a new Rh(III)-catalyzed domino annulation is described.

Graphical abstract: Rhodium(iii)-catalyzed three-component cascade synthesis of 6H-benzo[c]chromenes through C–H activation
From the themed collection: Synthetic methodology in OBC
Communication

Nickel catalyzed site selective C–H functionalization of α-aryl-thioamides

A nickel catalyzed C–H bond functionalization reaction has been used for the first time to study an intramolecular site-selective C–S bond formation of arenes.

Graphical abstract: Nickel catalyzed site selective C–H functionalization of α-aryl-thioamides
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Synthesis and application of a new chiral monodentate spiro phosphoramidite ligand based on hexamethyl-1,1′-spirobiindane backbone in asymmetric hydroamination/arylation of alkenes

A new chiral monodentate spiro phosphoramidite ligand based on a hexamethyl-1,1′-spirobiindane scaffold has been developed and applied in Pd-catalyzed asymmetric hydroamination/arylation of alkenes.

Graphical abstract: Synthesis and application of a new chiral monodentate spiro phosphoramidite ligand based on hexamethyl-1,1′-spirobiindane backbone in asymmetric hydroamination/arylation of alkenes
From the themed collection: Catalysis & biocatalysis in OBC
Communication

An organocatalytic asymmetric Mannich reaction for the synthesis of 3,3-disubstituted-3,4-dihydro-2-quinolones

An organocatalytic asymmetric Mannich reaction between 3-cyano-3,4-dihydroquinolones and amidosulfones has been developed to construct biologically important 3,3-disubstituted 3,4-dihydroquinolones.

Graphical abstract: An organocatalytic asymmetric Mannich reaction for the synthesis of 3,3-disubstituted-3,4-dihydro-2-quinolones
From the themed collection: Catalysis & biocatalysis in OBC
Communication

A new route to substituted furocoumarins via copper-catalyzed cyclization between 4-hydroxycoumarins and ketoximes

A new route to substituted furocoumarins via copper-catalyzed cyclization between 4-hydroxycoumarins and ketoximes was developed.

Graphical abstract: A new route to substituted furocoumarins via copper-catalyzed cyclization between 4-hydroxycoumarins and ketoximes
From the themed collection: Catalysis & biocatalysis in OBC
Communication

An organocatalyst bound α-aminoalkyl radical intermediate for controlled aerobic oxidation of iminium ions

A nucleophilic catalyst is introduced for facile radical formation and its catalyst controlled aerobic oxidation.

Graphical abstract: An organocatalyst bound α-aminoalkyl radical intermediate for controlled aerobic oxidation of iminium ions
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Electrochemical Hofmann rearrangement mediated by NaBr: practical access to bioactive carbamates

An electrochemical Hofmann rearrangement is reported, which provides general and practical access to bioactive carbamates.

Graphical abstract: Electrochemical Hofmann rearrangement mediated by NaBr: practical access to bioactive carbamates
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Cobalt-catalyzed carbon–sulfur/selenium bond formation: synthesis of benzo[b]thio/selenophene-fused imidazo[1,2-a]pyridines

An efficient cobalt-catalyzed C–S/C–Se bond formation method for the synthesis of benzo[b]thio/selenophene-fused imidazo[1,2-a]pyridines has been developed.

Graphical abstract: Cobalt-catalyzed carbon–sulfur/selenium bond formation: synthesis of benzo[b]thio/selenophene-fused imidazo[1,2-a]pyridines
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Bifunctional catalysis in the stereocontrolled synthesis of tetrahydro-1,2-oxazines

The application of bifunctional catalysis for the synthesis of tetrahydro-1,2-oxazines is described.

Graphical abstract: Bifunctional catalysis in the stereocontrolled synthesis of tetrahydro-1,2-oxazines
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Rh(III)-Catalyzed ortho-C–H alkynylation of N-phenoxyacetamides with hypervalent iodine-alkyne reagents at room temperature

Directing group ONHR preserved ortho-alkynylation under mild conditions catalyzed by rhodium is reported.

Graphical abstract: Rh(iii)-Catalyzed ortho-C–H alkynylation of N-phenoxyacetamides with hypervalent iodine-alkyne reagents at room temperature
From the themed collection: Catalysis & biocatalysis in OBC
Communication

A biocatalytic cascade for the amination of unfunctionalised cycloalkanes

Here we describe a one-pot, three-enzyme, cascade involving a cytochrome P450 monooxygenase, an alcohol dehydrogenase and a reductive aminase for the synthesis of secondary amines from cycloalkanes.

Graphical abstract: A biocatalytic cascade for the amination of unfunctionalised cycloalkanes
From the themed collection: Catalysis & biocatalysis in OBC
Communication

Organocatalytic umpolung annulative dimerization of ynones for the synthesis of 5-alkylidene-2-cyclopentenones

A novel phosphine-catalyzed umpolung [3 + 2]-annulative dimerization of ynones was developed to furnish functionally rich 5-alkylidene-2-cyclopentenones.

Graphical abstract: Organocatalytic umpolung annulative dimerization of ynones for the synthesis of 5-alkylidene-2-cyclopentenones
From the themed collection: Catalysis & biocatalysis in OBC
Accepted Manuscript - Paper

Gold-Catalyzed formation of aryl-fused pyrazolooxazepines via intramolecular regioselective 7-exo-dig cyclization

From the themed collection: Catalysis & biocatalysis in OBC
Paper

Kinetic resolution of β-ketoesters with quaternary stereocenters via a carbene-catalyzed benzoin reaction

N-Heterocyclic carbene-catalyzed kinetic resolution is used to produce enantioenriched β-ketoesters with quaternary stereocenters. Sterically bulky substituents such as benzyl, allyl, phenyl and cyclopropyl groups are all tolerated in this method.

Graphical abstract: Kinetic resolution of β-ketoesters with quaternary stereocenters via a carbene-catalyzed benzoin reaction
From the themed collection: Catalysis & biocatalysis in OBC
Paper

Modular DNA-based hybrid catalysts as a toolbox for enantioselective hydration of α,β-unsaturated ketones

The direct addition of water to a carbon–carbon double bond remains a challenge, but such a reaction is essential for the development of efficient catalysts that enable direct access to chiral alcohols.

Graphical abstract: Modular DNA-based hybrid catalysts as a toolbox for enantioselective hydration of α,β-unsaturated ketones
From the themed collection: Catalysis & biocatalysis in OBC
Paper

Boronic acid-catalysed C-3 selective ring opening of 3,4-epoxy alcohols with thiophenols and thiols

A boronic acid-catalysed C-3 selective ring opening of 3,4-epoxy alcohols with thiophenols and thiols as nucleophiles has been accomplished.

Graphical abstract: Boronic acid-catalysed C-3 selective ring opening of 3,4-epoxy alcohols with thiophenols and thiols
From the themed collection: Catalysis & biocatalysis in OBC
Paper

Direct synthesis of 2,4,5-trisubstituted imidazoles from primary alcohols by diruthenium(II) catalysts under aerobic conditions

A straightforward synthetic approach to 2,4,5-trisubstituted imidazoles from readily available primary alcohols using arene diruthenium(II) catalysts has been described.

Graphical abstract: Direct synthesis of 2,4,5-trisubstituted imidazoles from primary alcohols by diruthenium(ii) catalysts under aerobic conditions
From the themed collection: Catalysis & biocatalysis in OBC
Paper

Iron-catalyzed asymmetric intramolecular cyclopropanation reactions using chiral tetramethyl-1,1′-spirobiindane-based bisoxazoline (TMSI-BOX) ligands

Fe complexes of TMSI-BOX based on the tetramethyl-1,1′-spirobiindane backbone have been developed and applied in catalytic highly enantioselective intramolecular cyclopropanation reactions.

Graphical abstract: Iron-catalyzed asymmetric intramolecular cyclopropanation reactions using chiral tetramethyl-1,1′-spirobiindane-based bisoxazoline (TMSI-BOX) ligands
From the themed collection: Catalysis & biocatalysis in OBC
Paper

KIO3-catalyzed cross dehydrogenative coupling reaction: sulfenylation of phenol and arylamine derivatives in water at room temperature

A metal-free direct sulfenylation of phenol and arylamine derivatives with various heterocyclic thiols and thiones using a cross dehydrogenative coupling protocol in water at room temperature has been developed.

Graphical abstract: KIO3-catalyzed cross dehydrogenative coupling reaction: sulfenylation of phenol and arylamine derivatives in water at room temperature
From the themed collection: Synthetic methodology in OBC
Paper

Organocatalyzed asymmetric tandem conjugate addition–protonation of isocyanoacetates to 2-chloroacrylonitrile

Dihydroquinine-derived thiourea catalyzed asymmetric tandem conjugate addition–protonation of α-isocyanoacetates to 2-chloroacrylonitrile was developed.

Graphical abstract: Organocatalyzed asymmetric tandem conjugate addition–protonation of isocyanoacetates to 2-chloroacrylonitrile
From the themed collection: Catalysis & biocatalysis in OBC
Paper

Asymmetric α-alkylation of cyclic β-keto esters and β-keto amides by phase-transfer catalysis

A facile and efficient asymmetric α-alkylation of β-keto esters and β-keto amides has been achieved by phase-transfer catalysis.

Graphical abstract: Asymmetric α-alkylation of cyclic β-keto esters and β-keto amides by phase-transfer catalysis
From the themed collection: Synthetic methodology in OBC
Paper

Stereo- and regioselective gold(I)-catalyzed hydroamination of 2-(arylethynyl)pyridines with anilines

The gold-catalyzed hydroamination of 2-(arylethynyl)pyridines with anilines affords stereoselectively Z-enamine products with excellent regioselectivity.

Graphical abstract: Stereo- and regioselective gold(i)-catalyzed hydroamination of 2-(arylethynyl)pyridines with anilines
From the themed collection: Catalysis & biocatalysis in OBC
Paper

Synthesis of (Z)-β-halo α,β-unsaturated carbonyl systems via the combination of halotrimethylsilane and tetrafluoroboric acid

A procedure for the stereoselective synthesis of β-halovinyl derivatives via a conjugate addition of HX to ynones has been developed.

Graphical abstract: Synthesis of (Z)-β-halo α,β-unsaturated carbonyl systems via the combination of halotrimethylsilane and tetrafluoroboric acid
From the themed collection: Synthetic methodology in OBC
Paper

Cu-Catalyzed carbamoylation versus amination of quinoline N-oxide with formamides

Carbamoylation and amination of quinoline with formamides was developed via copper-catalyzed C–C and C–N bond formations.

Graphical abstract: Cu-Catalyzed carbamoylation versus amination of quinoline N-oxide with formamides
From the themed collection: Synthetic methodology in OBC
Paper

Asymmetric transfer hydrogenation of cycloalkyl vinyl ketones to allylic alcohols catalyzed by ruthenium amido complexes

A chemoselective 1,2-reduction of cycloalkyl vinyl ketones to the corresponding chiral allylic alcohols via asymmetric transfer hydrogenation is described.

Graphical abstract: Asymmetric transfer hydrogenation of cycloalkyl vinyl ketones to allylic alcohols catalyzed by ruthenium amido complexes
From the themed collection: Synthetic methodology in OBC
Paper

Synthesis of quinazoline-3-oxides via a Pd(II) catalyzed azide–isocyanide coupling/cyclocondensation reaction

One-pot three-component synthesis of quinazoline 3-oxides promoted by single Pd(II) catalysis under mild reaction conditions.

Graphical abstract: Synthesis of quinazoline-3-oxides via a Pd(ii) catalyzed azide–isocyanide coupling/cyclocondensation reaction
From the themed collection: Catalysis & biocatalysis in OBC
Paper

Stereoselective synthesis of chromane derivatives via a domino reaction catalyzed by modularly designed organocatalysts

A highly enantio- and diastereoselective synthesis of functionalized chroman-2-ones and chromanes was achieved.

Graphical abstract: Stereoselective synthesis of chromane derivatives via a domino reaction catalyzed by modularly designed organocatalysts
From the themed collection: Catalysis & biocatalysis in OBC
Paper

Visible light promoted coupling of alkynyl bromides and Hantzsch esters for the synthesis of internal alkynes

A metal-free visible light promoted synthesis of internal alkynes was developed via the C(sp3)–C(sp) coupling of alkynyl bromides and Hantzsch esters.

Graphical abstract: Visible light promoted coupling of alkynyl bromides and Hantzsch esters for the synthesis of internal alkynes
From the themed collection: Catalysis & biocatalysis in OBC
Paper

Aromatic donor–acceptor interaction promoted catalyst assemblies for hydrolytic kinetic resolution of epichlorohydrin

The catalyst activity of bis-acceptor functionalized Co(III)–salen in hydrolytic kinetic resolution can be fine-tuned by introducing a proper donor compound.

Graphical abstract: Aromatic donor–acceptor interaction promoted catalyst assemblies for hydrolytic kinetic resolution of epichlorohydrin
From the themed collection: Catalysis & biocatalysis in OBC
Paper

Anthracene–rhodium complexes with metal coordination at the central ring – a new class of catalysts for reductive amination

A new class of anthracene–metal complexes with central ring coordination was tested in catalysis. A simple and efficient protocol for reductive amination without an external hydrogen source has been developed.

Graphical abstract: Anthracene–rhodium complexes with metal coordination at the central ring – a new class of catalysts for reductive amination
From the themed collection: Synthetic methodology in OBC
Paper

Asymmetric Michael addition between kojic acid derivatives and unsaturated ketoesters promoted by C2-symmetric organocatalysts

An efficient C2-symmetric bifunctional tertiary amine–squaramide organocatalyst for the asymmetric Michael addition/hemiketalization domino reaction of kojic acid derivatives with β,γ-unsaturated α-ketoesters has been designed.

Graphical abstract: Asymmetric Michael addition between kojic acid derivatives and unsaturated ketoesters promoted by C2-symmetric organocatalysts
From the themed collection: Catalysis & biocatalysis in OBC
Paper

B(C6F5)3-catalyzed Markovnikov addition of indoles to aryl alkynes: an approach toward bis(indolyl)alkanes

The B(C6F5)3-catalyzed Markovnikov addition of indoles to aryl alkynes was achieved, leading to a wide spectrum of versatile bis(indolyl)alkanes in moderate to good yields with high regioselectivities.

Graphical abstract: B(C6F5)3-catalyzed Markovnikov addition of indoles to aryl alkynes: an approach toward bis(indolyl)alkanes
From the themed collection: Catalysis & biocatalysis in OBC
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