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A facile protocol for the preparation of 2-carboxylated thieno [2,3-b] indoles: a de novo access to alkaloid thienodolin

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Synthesis of novel pyridinium 1,5-zwitterions and their reactivity with isatin-based α-(trifluoromethyl)imines: a sulfur-controlled domino reaction

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Two reaction modes of 1-sulfonyl-1,2,3-triazoles and pyridinium 1,4-zwitterionic thiolates: catalyst-free synthesis of pyrido[1,2-a]pyrazine derivatives and 1,4-thiazine derivatives

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Synthesis of indolizines from pyridinium 1,4-zwitterionic thiolates and α-functionalized bromoalkanes via a stepwise [(5+1)−1] pathway

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Synthesis of tetrasubstituted thiophenes via a [3+2] cascade cyclization reaction of pyridinium 1,4-zwitterionic thiolates and activated allenes

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Molecular diversity of TEMPO-mediated cycloaddition of ketohydrazones and 3-phenacylideneoxindoles

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Intramolecular hydrogen bonding in phenolic amides enables direct synthesis of indolizines

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Synthesis of indolizines from pyridinium 1,4-zwitterionic thiolates and propiolic acid derivatives via a formal [4 + 1] pathway

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Synthesis of aryl-fused 1,4-oxathiepines from pyridinium 1,4-zwitterionic thiolates and vinylideneortho-quinone methides

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Synthesis of fully substituted pyrazoles from pyridinium 1,4-zwitterionic thiolates and hydrazonoyl chlorides via a [[3 + 3] − 1] pathway

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Regioselective and stereospecific synthesis of functionalized 3,4-dihydro-2H-1,4-thiazines by catalyst-free [3 + 3] annulation of pyridinium 1,4-zwitterionic thiolates and aziridines

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Aza-Diels-Alder reaction of both electron-deficient azoalkenes with electron-deficient 3-phencaylideneoxindoles and 3-aryliminooxindol-2-ones

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Recent Strategies in the Nucleophilic Dearomatization of Pyridines, Quinolines, and Isoquinolines

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Strategy to Construct Polycyclic Scaffolds via Formal Aza‐Diels‐Alder Reaction of Dihydro‐β‐Carboline with Heterodiene Precursor

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Synthesis of 1,4-oxathiins via [3+3] annulation of pyridinium 1,4-zwitterionic thiolates with iodonium ylides

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Update on the Synthesis of N‐Heterocycles via Cyclization of Hydrazones (2017–2021)

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Synthesis, X-ray diffraction, Hirshfeld surface analysis, computational chemistry and molecular docking studies of two carbothioamide, 3-(4-chlorophenyl)-5-(thiophene-2-yl)-4,5-dihydro-1H-pyrazole-1-carbothioamide and 3-(4-methoxyphenyl)-5-(thiophene-2-yl)-4, 5-dihydro-1H-pyrazole-1-carbothioamide

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Synthesis of tetrasubstituted thiophenes from pyridinium 1,4-zwitterionic thiolates and modified activated alkynes

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Diastereodivergent formal [4 + 1] cycloaddition of azoalkenes as one-carbon synthons

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Direct Cyclopropanation of Quinolinium Zwitterionic Thiolates via Dearomative Reactions

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Indolizine Synthesis through Annulation of Pyridinium 1,4‐Thiolates and Copper Carbenes: A Predictive Catalysis Approach

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Synthesis of 3,4-Dihydro-2H-1,3-thiazines from α-Enolic Dithioesters and 1,3,5-Triazinanes via a Formal (3 + 3) Annulation Reaction

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Divergent Synthesis of Sulfur‐Containing Bridged Cyclobutanes by Lewis Acid Catalyzed Formal Cycloadditions of Pyridinium 1,4‐Zwitterionic Thiolates and Bicyclobutanes

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Catalyst‐free 1,6‐Conjugate Addition of S‐Nucleophiles to para‐Quinone Methides

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Formal [2+2+2] Cycloaddition Reaction of 1,3,5‐Triazinanes with diethyl acetylene dicarboxylate: Approach to Tetrahydropyrimidines

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Application of Pyridinium 1,4-Zwitterionic Thiolates: Synthesis of Benzopyridothiazepines and Benzothiophenes

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Switchable Ring-Contractive Extrusion Reactions of 2,5-Dihydro-1,4,5-thiadiazepine S-Oxides: Entries to Pyridazines or Pyrazoles

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Copper(I) Iodide Catalyzed [3 + 3] Annulation of Iodonium Ylides with Pyridinium 1,4-Zwitterionic Thiolates for the Synthesis of 1,4-Oxathiin Scaffolds

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Transition-Metal-Free Radical Approach for the Synthesis of Isothiocyanates by Pyridinium 1,4-Zwitterionic Thiolates as a Sulfur Source

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Copper-Catalyzed Decarboxylative Cascade Cyclization of Propargylic Cyclic Carbonates/Carbamates with Pyridinium 1,4-Zwitterionic Thiolates to Fused Polyheterocyclic Structures

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Electrophilic Chlorine from Chlorosulfonium Salts: A Highly Chemoselective Reduction of Sulfoxides

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Domino-Annulation-Based Approach to Synthesize Bridged Bis-thiopyrano[2,3-b]indoles and Unbridged Thiopyrano[2,3-b]indoles

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Visible‐Light‐Promoted Willgerodt–Kindler‐Type Thioamidation Reaction of Amines, α‐Ketoacids, and Elemental Sulfur

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Two Reaction Modes of Pyridinium 1,4-Zwitterionic Thiolates with Sulfenes: Synthesis of 3H-1,2-Dithiole 2,2-Dioxides, 1,9a-Dihydropyrido[2,1-c][1,4]thiazines, and Indolizines

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Silver(I)‐ and Base‐Mediated formal [4+3] Cycloaddition of in Situ generated 1,2‐Diaza‐1,3‐dienes with C,N‐Cyclic Azomethine Imines: An Efficient Protocol for the Synthesis of Tetrazepine Derivatives

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Synthesis of Functionalized 4,1‐Benzothiazepines via a [4+3] Annulation between Aza‐o‐Quinone Methides and Pyridinium 1,4‐Zwitterionic Thiolates

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Synthesis of 4‐(Trifluoromethyl)‐2,3‐Dihydrothiazoles from α‐Enolic Dithioesters and Imidoyl Sulfoxonium Ylides

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Design and synthesis of unique thiazoloisoquinolinium thiolates and derivatives

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Synthesis of Pyridothiazepines via a 1,5‐Dipolar Cycloaddition Reaction between Pyridinium 1,4‐Zwitterionic Thiolates and Activated Allenes

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Synthesis of Functionalized 3,4‐Dihydro‐2H‐1,4‐Thiazines Through (3 + 3) Cyclization of Pyridinium 1,4‐Zwitterionic Thiolates With 2‐Bromoacetoanilides

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Metal and Oxidant Free Construction of Substituted‐ and/or Polycyclic Indoles: A Useful Alternative to Bischler and Related Syntheses

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[(5+1)−1] Cyclization of Nitroepoxides to Pyridinium 1,4‐Zwitterionic Thiolates for the Synthesis of Indolizine Derivatives

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Synthesis of 5‐Trifluoromethylpyrroles from Heating‐Induced Annulation of Pyridinium 1,4‐Zwitterionic Thiolates with CF3‐Imidoyl Sulfoxonium Ylides

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A Multi‐Component Reaction of Hexafluoro‐1,4‐naphthoquinone with N‐Heterocycles and Active Methylene Compounds: A Straightforward Approach to Polyfluorinated Zwitterions

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Access to Functionalized 1,4-Oxathiines through [3 + 3] Annulation of Dicyanoepoxides with Pyridinium 1,4-Zwitterionic Thiolates

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Assembly of Thiazino[3,4‐a]Isoquinoline and Thiazepino[5,4‐a]Isoquinoline Frameworks from Isoquinolinium 1,4‐Zwitterionic Thiolates Through [5+1] and [5+2] Cycloaddition Reactions

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A New Reaction Mode of 3-Halooxindoles: Acting as C–C–O Three-Atom Components for (3+3) Cycloaddition to Access Indolenine-Fused 2H-1,4-Oxathiines

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Recent Progress in Heterocycle Synthesis: Cyclization Reaction with Pyridinium and Quinolinium 1,4-Zwitterions

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Efficient capture of difluorocarbene by pyridinium 1,4-zwitterionic thiolates: A concise synthesis of difluoromethylene-containing 1,4-thiazine derivatives

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Development and Application of Pyridinium 1,4‐Zwitterionic Thiolates: Synthesis of Polysubstituted Thiophenes

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Construction of Polyfunctionalized 2,4-Dioxa-8-azaspiro[5.5]undec-9-enes and 2,4,8-Triazaspiro[5.5]undec-9-enes via a Domino [2+2+2] Cycloaddition Reaction

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Divergent Synthesis of Sulfur‐Containing Bridged Cyclobutanes by Lewis Acid Catalyzed Formal Cycloadditions of Pyridinium 1,4‐Zwitterionic Thiolates and Bicyclobutanes

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Synthesis of 1,3,4-Thiadiazoles and 1,4,2-Oxathiazoles from α-Enolic Dithioesters and Active 1,3-Dipoles

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Synthesis of Benzo[e][1,4]thiazepines by Base-Induced Formal [4+3] Annulation Reaction of Aza-o-quinone Methides and Pyridinium 1,4-Zwitterionic Thiolates

Lijie Zhang, Ling Fang, Hao Huang, Chaofan Wang, Fang Gao and Zhiyong Wang

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Copper-Catalyzed Formal [4 + 1] Annulation toward Diverse Trifunctionalized Indolizines from Pyridinium 1,4-Zwitterionic Thiolates and Diazos

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