Mechanism of the Palladium-Catalyzed Intramolecular Hydroalkylation of 7-Octene-2,4-dione
作者:Hua Qian、Ross A. Widenhoefer
DOI:10.1021/ja0293002
日期:2003.2.1
cis-2-acyl-3,4-dideuteriocyclohexanone (cis-3-3,4-d(2)) in 64% yield as the exclusive isotopomer. This experiment, in conjunction with additional deuterium labeling experiments, was in accord with a mechanism for the conversion of 1 to 3 catalyzed by 2 involving attack of the enol carbon atom on a palladium-complexed olefin followed by palladium migration and protonolysis from a palladium enolate complex
PdCl(2)(CH(3)CN) 催化 (E)-7,8-dideuterio-7-octene-2,4-dione [(E)-1-7,8-d(2)] 的环化(2) (2) 以 64% 的产率形成了 cis-2-acyl-3,4-dideuteriocyclohexanone (cis-3-3,4-d(2)) 作为唯一的同位素。该实验与额外的氘标记实验相结合,符合由 2 催化的 1 到 3 转化的机制,包括烯醇碳原子对钯络合烯烃的攻击,随后钯迁移和来自钯烯醇化物的质子分解复杂的。