Olefin-Migrative Cleavage of Cyclopropane Rings through the Nickel-Catalyzed Hydrocyanation of Allenes and Alkenes
作者:Hiroto Hori、Shigeru Arai、Atsushi Nishida
DOI:10.1002/adsc.201601400
日期:2017.4.3
A nickel‐catalyzed hydrocyanation triggered by hydronickelation of the carbon‐carbon double bonds of allenes followed by cyclopropane cleavage is described. The observed regio‐ and stereochemistries in the products are strongly influenced by the initial hydronickelation step, and allenyl‐ and methylenecyclopropanes reacted smoothly to promote the cleavage of cyclopropane. In contrast, this cleavage
描述了由丙二烯的碳-碳双键的加氢镍化反应,然后环丙烷裂解引起的镍催化的氢氰化反应。最初的氢镍化步骤强烈影响产物中观察到的区域和立体化学,并且烯丙基和亚甲基环丙烷的反应平稳,促进了环丙烷的裂解。相反,用亚乙烯基环丙烷没有观察到这种裂解,因为最初的加氢镍化作用不能为裂解环丙烷提供合适的中间体。