Isao Shibuya
1979
Citations
0
Influential Citations
13
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
3,5-Diphenyl-1,2-dithiolium perchlorate (1) was synthesized in a new, convenient way, and the reaction of 1 with several active methylene compounds was studied. The compounds possessing no less than one ester group gave novel products, 3-substituted 4,6-diphenyl-2H-thiopyran-2-ones, while those possessing a carbamoyl group gave 3-substituted 2-hydroxy-4,6-diphenylpyridines or 3-cyano-1,4,6-triphenyl-2-pyridone. Malononitrile, however, gave 1-mercapto-1,3-diphenyl-4,4-dicyanobutadiene (10). On treatment with methyl iodide or p-chlorobenzyl chloride, 10 gave 1-methylthio- or 1-(p-chlorobenzylthio)-1,3-diphenyl-4,4-dicy-anobutadiene, and also led to bis(1,3-diphenyl-4,4-dicyanobutadienyl) disulfide on treatment with hydrogen peroxide.