PhI(OAc)2 and I2 with an allylic alcohol, can be rearranged to cis-fused bicyclic compounds using catalytic amounts of (n-Bu3Sn)2 and AIBN. Formally an atom transfer cyclization, the reaction proceeds through a tandem radical-induced epoxide fragmentation-H·abstraction-cyclization process.
由PhI(OAc)2和I 2与烯丙基醇反应形成的
碘代
环氧化物可以使用(n -Bu 3 Sn)2和AIBN催化量重排为顺式稠合
双环化合物。形式上为原子转移环化,该反应通过串联自由基诱导的
环氧化物断裂-H·抽象环化过程进行。