Rapid Assembly of Trifluoromethyl‐Substituted Thiazolidine‐2‐Thiones via [3 + 2] Annulation of Dithiocarbamate Salts with CF ₃ ‐Imidoyl Sulfoxonium Ylides Under Mild Conditions

A rapid and practical approach for the synthesis of trifluoromethyl‐substituted thiazolidine‐2‐thiones through [3 + 2] annulation of dithiocarbamate salts with CF 3 ‐imidoyl sulfoxonium ylides (TFISYs) under catalyst‐, oxidant‐, and additive‐free conditions. The transformation features simple operation, environmentally benign, very mild conditions, readily available reactants, high efficiency, and scalability, providing a facile and straightforward entry to biologically valuable N , S ‐containing heterocycle molecules.