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Communication | Regular issue | Vol 6, No. 3, 1977, pp.313-316
Published online, 1st January, 1970
DOI: 10.3987/R-1977-03-0313
Reaction of 1,3-Dithiole-2-thiones with Enamines. Formation of 1,3-Dithionin-2-thione, a Novel Heterocycle

Fumio Ishii, Renji Okazaki, and Naoki Inamoto*

*Department of Chemistry, Scool of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033


Reaction of 4-phenyl- (4a) and 4,5-diphenyl-1,3-dithiole-2-thione (4b) with 1-pyrrolidinocyclopentene gave 1,3-dithionin-2-thiones (5a,b), novel heterocycles, while reaction of 4a with 1-pyrrolidinocyclohexene afforded thiophene (7).