J. V. Allan, G. Reynolds, Chin H. Chen
Dec 1, 1977
Citations
0
Influential Citations
3
Citations
Journal
Journal of Heterocyclic Chemistry
Abstract
2,6-Diphenyl-2,3,5,6-tetrahydro-4H-thiopyran-4-one was treated with one, two, and three equivalents of sulfuryl chloride in the presence of pyridine to give the dihydrothiopyranone 2, the 3-chlorodihydrothiopyranone 3, and the triehlorotetrahydrothiopyranone 4, respectively. Compound 4 was converted to 3-chloro-2,6-diphenyl-4H-thiopyran-4-one by pyrolysis and to 3-hydroxy-2,6-diphenyl-4H-thiopyran-4-one on treatment with alcohols. Several pyrylium dyes were prepared from the latter compounds.