N. Sugiyama, Yoshiaki Sato, C. Kashima
Oct 1, 1970
Citations
0
Influential Citations
9
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
The irradiation of 2,6-diphenyl-4H-thiopyran-4-one (1) or 2,6-diphenyl-4H-pyran-4-one (2) in an alcohol in the presence of oxygen gave benzoic acid and a benzoylacetic acid ester, while that of 2 in benzene or 2,6-dimethyl-4H-thiopyran-4-one (5) in various solvents gave the corresponding cage dimer, (9) or (10). No photoreaction could be observed in case of the irradiation of 1,2,6-trimethyl-4-pyridone (3) and 6-methyl-1,2-diphenyl-4-pyridone (4). A reaction mechanism via the triplet state of the substrate was also proposed.