71888-57-8Relevant articles and documents
Heteroatom-directed alkylcyanation of alkynes
Nakao, Yoshiaki,Yada, Akira,Hiyama, Tamejiro
supporting information; experimental part, p. 10024 - 10026 (2010/10/04)
Alkanenitriles having a heteroatom such as nitrogen, oxygen, and sulfur at the γ-position are found to add across alkynes stereo-and regioselectively by nickel/Lewis acid catalysis to give highly substituted acrylonitriles. The heteroatom functionalities likely coordinate to the nickel center to make oxidative addition of the C-CN bonds of the alkyl cyanides kinetically favorable, forming a five-membered nickelacycle intermediate and, thus, preventing β-hydride elimination to allow the alkylcyanation reaction.