SCHEDULED MAINTENANCE
Palladium-catalyzed benzofuran and indole synthesis by multiple C–H functionalizations
Heterocyclic compounds are commonly found in the core structures of several pharmaceuticals, natural products, and agrochemicals, thus spurring intensive research for conducting their synthesis in a mild and simpler way.
Communication
Thiol–ene/oxidation tandem reaction under visible light photocatalysis: synthesis of alkyl sulfoxides
The photocatalyzed synthesis of sulfoxides from alkenes and thiols has been carried out using Eosin Y.
ZIF-derived porous carbon supported Pd nanoparticles within mesoporous silica shells: sintering- and leaching-resistant core–shell nanocatalysts
We prepared sintering- and leaching-resistant core–shell nanocatalysts which exhibited excellent catalytic activity and recyclability for oxidation of benzyl alcohol.
Metal-free radical trifluoromethylation of β-nitroalkenes through visible-light photoredox catalysis
First report an efficient catalytic conversion of nitroalkenes to 1-trifluoromethyalkenes under metal-free visible-light photoredox catalysis is disclosed.
Photo-induced copper-catalyzed C–H chalcogenation of azoles at room temperature
Copper-catalyzed C–H chalcogenations of heteroarenes were achieved at room temperature of 25 °C by photo-induced catalysis within a three-component C–S and C–Se forming regime.
Copper-catalyzed remote (δ) C(sp3)–H bond amination: a practical strategy to construct pyrrolidine derivatives
This work reported a copper-catalyzed remote C(sp3)–H bond amination of primary, secondary and tertiary C–H bonds, which converted acyclic amines to pyrrolidine derivatives.
Communication
Cobalt-catalysed Markovnikov selective hydroboration of vinylarenes
A bipyridiyl–oxazoline cobalt catalyst tBuBPOCoCl2 has been developed for the Markovnikov selective hydroboration of vinylarenes using pinacolborane and NaOtBu as the in situ activator.
Visible-light-mediated C2-amination of thiophenes by using DDQ as an organophotocatalyst
A direct C–H amination of thiophenes was presented via an oxidation pathway under visible-light irradiation, in which the thiophene radical cation serves as the key intermediate. Various thiophenes and azoles could be transformed into the corresponding amination products well, and H2O was the only byproduct, which is environmentally benign.
Synthesis of enaminones via copper-catalyzed decarboxylative coupling reaction under redox-neutral conditions
A novel copper-catalyzed C(sp3)–H oxidative functionalization of oxime acetates for the synthesis of enaminones under redox-neutral conditions has been developed.
Photoredox-catalysed redox-neutral trifluoromethylation of vinyl azides for the synthesis of α-trifluoromethylated ketones
A redox-neutral, mild, and simple protocol is developed for the synthesis of α-trifluoromethylated ketones from vinyl azides upon visible-light irradiation.
Ruthenium-catalyzed meta/ortho-selective C–H alkylation of azoarenes using alkyl bromides
meta/ortho-Selective CAr–H (di)alkylation reactions of azoarenes have been achieved via [Ru(p-cymene)Cl2]2 catalyzed ortho-metalation using various types of alkyl bromides.
Selective C–H trifluoromethylation of benzimidazoles through photoredox catalysis
This protocol presented a new strategy for visible light induced C–H trifluoromethylation at the C4 of benzimidazoles using Togni's reagent in the presence of fac-Ir(ppy)3.