作者:Ruja Shrestha、Daniel J. Weix
DOI:10.1021/ol200881v
日期:2011.5.20
A new method is presented for tandem reductive conjugate addition and silyl enol ether formation from cyclic and acyclic enones and enals in the presence of a Mn reductant, a Ni(terpyridine) catalyst, and a trialkylchlorosilane. The addition of secondary, tertiary, and hindered primary haloalkanes is demonstrated. Preliminary studies on the mechanism show that the intermediacy of L1(Ni)(η3-1-triet
提出了一种新的方法,用于在锰还原剂,镍(吡啶)催化剂和三烷基氯硅烷存在下,从环状和非环状烯酮和烯类串联还原共轭加成和形成甲硅烷基烯醇醚。证明了添加仲,叔和受阻伯卤代烷烃。的机制表明,L1(Ni)制成的中间性(η初步研究3 -1- triethylsilyloxyalkenyl)X或原位形成的RMnX是不可能的。