kanes, , react to give good yields of the homoallylic substitution product, . Less reactive organocuprates react with to give mixtures of and the direct substitution product, . These results are consistent with a copper(I) radical intermediate which undergoes facile rearrangement prior to reductive coupling.
高反应性的二烷基
锂碳酸铜烷基酯和1-
溴-1-环丙基丙基
烷烃发生反应,可得到高收率的均烯丙基取代产物。反应性较低的
有机铜酸酯与之反应生成的混合物,直接取代产物。这些结果与
铜(I)自由基中间体一致,该中间体在还原偶联之前经历了容易的重排。