Synthesis of 3,5-Diaryl and 3,5-Dialkyl-1,2-dithiolylium-4-olates

Abstract

Abstract Sulfurization of 2-acetoxy or 2-benzoyloxy-1,3-propanediones gives the corresponding 1,2-dithiolylium salts which are used as starting materials for preparation of 1,2-dithiolylium-4-olates. The reaction was studied under different conditions in order to obtain the best sulfurization yields. A new 3-p-dimethylaminophenyl-5-phenyl-1,2-dithiolylium-4-olate is also described. It is formed by nucleophilic attack on a 3-alkylthio substituted or a 5 unsubstituted position of a 1,2-dithiolylium ion by N, N-dimethylaniline.