A new route to 1,3-dithioles from mesoionic 2-piperidino-5-aryl-1,3-dithiolium-4-thiolates. Synthesis of 2(1,3-dithiolan-2-ylidene)-1,3-dithioles and tetrathiafulvalenes using these new dithioles

Article abstract of DOI:10.1016/S0040-4039(00)73976-1

An original synthesis of 1,3-dithioles prepared from mesoionic 2-piperidino-5-aryl-1,3-dithiolium-4-thiolates is described. The reaction of the carbanion derived from 1,3-dithiole with carbon disulfide followed by alkylation to yield 2(1,3-dithiolan-2-ylidene)-1,3-dithiole is also reported. This synthesis of dithioles led to substituted tetrathiafulvalenes not accessible by our usual procedure.