Recent advances in the application of ylide-like species in [4+ 1]-annulation reactions: an updated review

PY Ushakov, SL Ioffe, AY Sukhorukov - Organic Chemistry Frontiers, 2022 - pubs.rsc.org
In this review, the advances made over the last 6 years in [4+ 1]-annulation reactions
involving sulfonium, sulfoxonium and ammonium ylides, as well as diazo compounds and …

Nitrile‐Stabilized Quaternary Ammonium Ylide as an Arylcyanomethylene Transfer Agent: Diastereoselective Synthesis of Spiro‐Cyanocyclopropyl‐2‐Oxindoles

M Nagpure, SK Guchhait - European Journal of Organic …, 2024 - Wiley Online Library
Nitrile‐stabilized quaternary ammonium ylide as an effective aryl‐cyanomethylene transfer
agent has been explored for the first time, which enables a spirocyclopropanation process …