Phenyl migration to thiophene ring in photolysis of 1-phenylbenzo[b]thiophenium salts
作者:Tsugio Kitamura、Kunihiko Morizane、Hiroshi Taniguchi、Yuzo Fujiwara
DOI:10.1016/s0040-4039(97)01116-7
日期:1997.7
Photolysis of 1-phenylbenzo[b]thiophenium salts was conducted by use of a Pyrex-filtered high-pressure Hg lamp. The major products in most cases were the phenyl-migrated ones, i.e., 2-phenylbenzo[b]thiophenes and 3-phenylbenzo[b]thiophenes, together with the dephenylated benzo[b]thiophenes. This photochemical behavior is quite different from the thermal ones that provide the ring-opened olefins. The
通过使用派热克斯过滤的高压汞灯进行1-苯基苯并[b]噻吩盐的光解。在大多数情况下,主要产物是苯基迁移的产物,即2-苯基苯并[b]噻吩和3-苯基苯并[b]噻吩,以及脱苯基苯并[b]噻吩。这种光化学行为与提供开环烯烃的热行为完全不同。苯向噻吩环的选择性迁移和离子产物的不存在是苯并噻吩体系的特征。