Direct Alkenylation and Alkylation of Pyridone Derivatives by Ni/AlMe<sub>3</sub> Catalysis
作者:Yoshiaki Nakao、Hiroaki Idei、Kyalo Stephen Kanyiva、Tamejiro Hiyama
DOI:10.1021/ja907214t
日期:2009.11.11
derivatives are achieved through inter- and intramolecular insertion of alkynes, 1,3-dienes, and alkenes into the C(6)-H bond by nickel/AlMe(3) catalysis. Coordination of the heterocycles to the Lewis acid cocatalyst through their basic carbonyl oxygen is considered to be responsible for the regioselective activation of the C-H bonds, probably through oxidative addition to nickel(0).
2-吡啶酮衍生物的区域选择性烯基化和烷基化是通过在镍/AlMe(3) 催化下将炔烃、1,3-二烯和烯烃插入 C(6)-H 键的分子间和分子内实现的。杂环通过它们的碱性羰基氧与路易斯酸助催化剂的配位被认为是导致 CH 键的区域选择性活化的原因,可能是通过氧化加成到镍 (0)。