We report here a novel reductive radical-polar crossover reaction that is a reductive radical-initiated 1,2-C migration of 2-azido allyl alcohols enabled by an azidyl group. The reaction tolerates diverse migrating groups, such as alkyl, alkenyl, and aryl groups, allowing access to n+1 ring expansion of small to large rings. The possibility of directly using propargyl alcohols in one-pot is also described
我们在这里报告了一种新颖的还原性自由基-极性交叉反应,该反应是由
叠氮基使2-
叠氮基
烯丙醇的还原性自由基引发的1,2-C迁移。该反应可耐受各种迁移基团,例如烷基,烯基和芳基,从而允许n +1环从小环扩展到大环。还描述了在一个锅中直接使用炔
丙醇的可能性。机理研究表明,
叠氮基是一个好的离去基团,并为1,2-C的迁移提供了驱动力。