作者:Frances L. Cozens、Robert A. McClelland、Steen Steenken
DOI:10.1021/ja00065a014
日期:1993.6
been examined in 1,1,1,3,3,3-hexafluoroisopropyl alcohol (HFIP). The only photoproduct is the Markovnikov adduct of the solvent, arising from an intermediate 1-arylcyclohexyl cation. This cation is observed as a transient species with laser flash photolysis, for both direct irradiation at 248 nm and benzophenone sensitized irradiation at 308 nm. As suggested in previous studies with phenylcyclohexene
已在 1,1,1,3,3,3-六氟异丙醇 (HFIP) 中检查了顺式-1-苯基环己烯及其间甲氧基衍生物的光化学。唯一的光产物是溶剂的马尔科夫尼科夫加合物,由中间体 1-芳基环己基阳离子产生。对于 248 nm 的直接照射和 308 nm 的二苯甲酮敏化照射,该阳离子被观察为具有激光闪光光解的瞬态物质。正如之前在其他溶剂中使用苯基环己烯的研究所表明的那样,该机制涉及由单线态和三线态激发态形成的应变反式-1-芳基环己烯的质子化。在 HFIP 中没有观察到反式环己烯,因为它被这种溶剂快速质子化