Phenyl Bridging in Ring-Substituted Cumyloxyl Radicals. A Product and Time-Resolved Kinetic Study
作者:Michela Salamone、Massimo Bietti、Alessandra Calcagni、Giacomo Gente
DOI:10.1021/ol900635z
日期:2009.6.4
of cumyloxyl radicals bearing cyclopropyl and 2,2-diphenylcyclopropyl groups in the para position has been investigated. Depending on radical structure, products deriving from C−C β-scission and/or cyclopropyl ring-opening are observed, supporting the hypothesis that cumyloxyl (and, more generally, arylcarbinyloxyl) radicals exist in equilibrium with 1-oxaspiro[2,5]octadienyl radicals, in full agreement
已经研究了在对位带有环丙基和2,2-二苯基环丙基的枯基氧基的反应性。根据自由基的结构,观察到了源自Cβ断裂和/或环丙基开环的产物,支持了以下假设:枯基氧基(更常见的是芳基羰基氧基)与1-oxaspiro处于平衡状态[2,5]。辛二烯基,与先前提出的1,1-二芳基烷氧基的O-新叶重排机制完全吻合。