Functionalization of Sydnones with Donor‐Acceptor Cyclopropanes, Cyclobutanes, and Michael Acceptors

Lewis Acid Catalyzed Ring-Opening 1,3-Aminothiolation of Donor–Acceptor Cyclopropanes Using Sulfenamides

(2020) Avishek Guin et al.   ORGANIC LETTERS

Ketenedithioacetals as Surrogates for the Formal Insertion of Ketenes into Donor-Acceptor Cyclopropanes

(2020) Alexander Lücht et al.   EUROPEAN JOURNAL OF ORGANIC CHEMISTRY

Triazene-Activated Donor–Acceptor Cyclopropanes: Ring-Opening and (3 + 2) Annulation Reactions

(2020) Abdusalom A. Suleymanov et al.   ORGANIC LETTERS

cis-Selective, Enantiospecific Addition of Donor–Acceptor Cyclopropanes to Activated Alkenes: An Iodination/Michael-Cyclization Cascade

(2020) Nils L. Ahlburg et al.   ORGANIC LETTERS

Multicomponent, Tandem 1,3- and 1,4-Bisarylation of Donor–Acceptor Cyclopropanes and Cyclobutanes with Electron-Rich Arenes and Hypervalent Arylbismuth Reagents

(2020) Biplab Mondal et al.   ORGANIC LETTERS

Lewis Acid Catalyzed [3+3] Annulation of Donor-Acceptor Cyclopropanes and Indonyl Alcohols: One Step Synthesis of Substituted Carbazoles with Promising Photophysical Properties

(2019) Rohit Kumar Varshnaya et al.   JOURNAL OF ORGANIC CHEMISTRY

Sydnone-Based Approach to Heterohelicenes through 1,3-Dipolar-Cycloadditions

(2019) Expédite Yen-Pon et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

(3+3)-Annulation of Carbonyl Ylides with Donor-Acceptor Cyclopropanes: Synergistic Dirhodium(II) and Lewis Acid Catalysis

(2019) Martin Petzold et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Ring‐Opening 1,3‐Aminochalcogenation of Donor‐Acceptor Cyclopropanes: A Three‐Component Approach

(2019) Daniel B. Werz et al.   CHEMISTRY-A EUROPEAN JOURNAL

NaOH-Promoted Chemoselective Cascade Cyclization of Cyclopropyl Esters with Unsaturated Imines: Access to Bioactive Cyclopenta[c]pyridine Derivatives

(2019) Dingwu Pan et al.   ORGANIC LETTERS

Ring-Opening Reactions of Donor–Acceptor Cyclobutanes with Electron-Rich Arenes, Thiols, and Selenols

(2019) Alexander Kreft et al.   ORGANIC LETTERS

Reactions of donor-acceptor cyclopropanes or benzylidenemalonate with benzyl azide by generating gallium trichloride 1,2-zwitterionic complexes

(2019) I. A. Borisova et al.   RUSSIAN CHEMICAL BULLETIN

(4 + 3)-Cycloaddition of Donor–Acceptor Cyclopropanes with Thiochalcones: A Diastereoselective Access to Tetrahydrothiepines

(2019) André U. Augustin et al.   ORGANIC LETTERS

Suzuki–Miyaura Cross-Couplings under Acidic Conditions

(2019) Lucas Pruschinski et al.   SYNTHESIS-STUTTGART

Uncovering the Neglected Similarities of Arynes and Donor-Acceptor Cyclopropanes

(2019) Daniel B. Werz et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Lewis Acid Catalyzed Stereoselective Dearomative Coupling of Indolylboron Ate Complexes with Donor-Acceptor Cyclopropanes and Alkyl Halides

(2018) Saikat Das et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

An Expeditious Route to trans -Configured Tetrahydrothiophenes Enabled by Fe(OTf)3 -Catalyzed [3+2] Cycloaddition of Donor-Acceptor Cyclopropanes with Thionoesters

(2018) Yohei Matsumoto et al.   CHEMISTRY-A EUROPEAN JOURNAL

Exploitation of Environment-sensitive Luminophores in the Design of Novel Sydnone-based Bioorthogonal Imaging Reagents

(2018) Lawrence Cho-Cheung Lee et al.   CHEMISTRY-A EUROPEAN JOURNAL

The Cyclopropyl Group as a Neglected Donor in Donor–Acceptor Cyclopropane Chemistry

(2018) Alexander Kreft et al.   ORGANIC LETTERS

Formal Insertion of Thioketenes into Donor–Acceptor Cyclopropanes by Lewis Acid Catalysis

(2018) André U. Augustin et al.   ORGANIC LETTERS

Nucleophilic Ring Opening of Donor–Acceptor Cyclopropanes Catalyzed by a Brønsted Acid in Hexafluoroisopropanol

(2018) Edward Richmond et al.   ORGANIC LETTERS

Anionic N-heterocyclic carbenes by decarboxylation of sydnone-4-carboxylates

(2018) Ana-Luiza Lücke et al.   TETRAHEDRON

Ni(ClO4 )2 -Catalyzed Friedel-Crafts Reaction of Coumarin-Fused Donor-Acceptor Cyclopropanes with Indoles: Stereoselective Synthesis of trans -3,4-Disubstituted-3,4-dihydrocoumarins

(2018) Jusung Lee et al.   EUROPEAN JOURNAL OF ORGANIC CHEMISTRY

Exploitation of Cyclopropane Carbaldehydes to Prins Cyclization: Quick Access to (E)-Hexahydrooxonine and Octahydrocyclopenta[b]pyran

(2018) Pankaj Kumar et al.   ORGANIC LETTERS

Kinetic Studies of Donor-Acceptor Cyclopropanes: Is Reactivity Predictably Related to Structural and Electronic Properties?

(2018) Daniel B. Werz et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Ionic Ga-Complexes of Alkylidene- and Arylmethylidenemalonates and Their Reactions with Acetylenes: An In-Depth Look into the Mechanism of the Occurring Gallium Chemistry

(2018) Roman A. Novikov et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Expanding the Reactivity of Donor–Acceptor Cyclopropanes: Synthesis of Benzannulated Five-Membered Heterocycles via Intramolecular Attack of a Pendant Nucleophilic Group

(2018) Olga A. Ivanova et al.   ORGANIC LETTERS

Substituent and Lewis Acid Promoted Dual Behavior of Epoxides towards [3+2]-Annulation Reactions with Donor-Acceptor Cyclopropanes: Synthesis of Substituted Cyclopentane and Tetrahydrofuran

(2017) Ashok Kumar Pandey et al.   EUROPEAN JOURNAL OF ORGANIC CHEMISTRY

[4 + 2] Annulation of Donor–Acceptor Cyclopropanes with Acetylenes Using 1,2-Zwitterionic Reactivity

(2017) Roman A. Novikov et al.   JOURNAL OF ORGANIC CHEMISTRY

Synthesis of aminopyrazoles from sydnones and ynamides

(2017) T. Wezeman et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

DBU-mediated [4 + 1] annulations of donor–acceptor cyclopropanes with carbon disulfide or thiourea for synthesis of 2-aminothiophene-3-carboxylates

(2017) Zhenjie Su et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

Nazarov Cyclization and Tandem [4 + 2]-Cycloaddition Reactions of Donor–Acceptor Cyclopropanes

(2017) Gangarajula Sudhakar et al.   ORGANIC LETTERS

Lewis Acid Catalyzed Diastereoselective Cycloaddition Reactions of Donor–Acceptor Cyclopropanes and Vinyl Azides: Synthesis of Functionalized Azidocyclopentane and Tetrahydropyridine Derivatives

(2017) Raghunath Dey et al.   ORGANIC LETTERS

Suzuki–Miyaura Cross-Coupling Reactions in Acetic Acid Employing Sydnone-Derived Catalyst Systems

(2017) Andreas Schmidt et al.   SYNLETT

Dearomatization of electron poor six-membered N-heterocycles through [3 + 2] annulation with aminocyclopropanes

(2017) Johannes Preindl et al.   Chemical Science

Stereoselective Cascade Reactions of Donor-Acceptor Cyclopropanes withm-N,N-Dialkylaminophenyl α,β-Unsaturated Carbonyls: Diastereoselective Synthesis ofcis- andtrans-Tetralins

(2016) Seunghui Sin et al.   ADVANCED SYNTHESIS & CATALYSIS

Ring-Opening Regio-, Diastereo-, and Enantioselective 1,3-Chlorochalcogenation of Cyclopropyl Carbaldehydes

(2016) Jan Wallbaum et al.   CHEMISTRY-A EUROPEAN JOURNAL

Multicomponent 1,3-Bifunctionalization of Donor–Acceptor Cyclopropanes with Arenes and Nitrosoarenes

(2016) Saikat Das et al.   ORGANIC LETTERS

Ring opening of DA-cyclopropanes with electron rich arene/heteroarene: synthesis of 2-(2,2-diarylethyl)malonates

(2016) Ranadeep Talukdar et al.   TETRAHEDRON

Lewis-Acid-Catalysed Friedel-Crafts Alk­ylation of Donor-Acceptor Cyclopropanes with Electron-Rich Benzenes to Generate 1,1-Diarylalkanes

(2015) Areum Kim et al.   EUROPEAN JOURNAL OF ORGANIC CHEMISTRY

Facile Synthesis of 1-Arylpyrazoles

(2015) Yiwen Yang et al.   SYNTHESIS-STUTTGART

The relative stability of mesoionic and N-heterocyclic carbene tautomers: a computational study of substituent effects

(2015) Christopher A. Ramsden et al.   TETRAHEDRON

A New Golden Age for Donor-Acceptor Cyclopropanes

(2014) Tobias F. Schneider et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Sydnone anions and abnormal N-heterocyclic carbenes of O-ethylsydnones. Characterizations, calculations and catalyses

(2014) Sascha Wiechmann et al.   CHEMICAL COMMUNICATIONS

Remote Ester Groups Switch Selectivity: Diastereodivergent Synthesis of Tetracyclic Spiroindolines

(2014) Jun Zhu et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

A DFT study of isomeric conjugated, cross-conjugated and semi-conjugated six-membered heterocyclic mesomeric betaines

(2014) Christopher A. Ramsden et al.   TETRAHEDRON

Discovery of Chemoselective and Biocompatible Reactions Using a High-Throughput Immunoassay Screening

(2013) Sergii Kolodych et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Intramolecular donor–acceptor cyclopropane ring-opening cyclizations

(2013) Marchello A. Cavitt et al.   CHEMICAL SOCIETY REVIEWS

Heterocyclic mesomeric betaines: the recognition of five classes and nine sub-classes based on connectivity-matrix analysis

(2013) Christopher A. Ramsden   TETRAHEDRON

Complexes of Donor–Acceptor Cyclopropanes with Tin, Titanium, and Gallium Chlorides — Mechanism Studies

(2012) Roman A. Novikov et al.   ORGANOMETALLICS

Synthesis of 2H-Indazoles by the [3 + 2] Dipolar Cycloaddition of Sydnones with Arynes

(2011) Yuesi Fang et al.   JOURNAL OF ORGANIC CHEMISTRY

Nucleophilic Ring Opening of Cyclopropane Hemimalonates Using Internal Brønsted Acid Activation

(2011) Michael R. Emmett et al.   ORGANIC LETTERS

Recent developments in the chemistry of sydnones

(2009) Duncan L. Browne et al.   TETRAHEDRON

Lewis Acid Catalyzed Reactions of Donor-Acceptor Cyclopropanes with Anthracenes

(2008) Olga A. Ivanova et al.   EUROPEAN JOURNAL OF ORGANIC CHEMISTRY

Convenient access to 1,3,4-trisubstituted pyrazoles carrying 5-nitrothiophene moiety via 1,3-dipolar cycloaddition of sydnones with acetylenic ketones and their antimicrobial evaluation

(2007) N. Satheesha Rai et al.   EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY