Rhodium Catalyzed 1,4-Conjugate Addition of 1,5-Azastibocines with Electron Deficient Olefins
作者:Naoki Kakusawa、Jyoji Kurita
DOI:10.1248/cpb.56.1502
日期:——
The rhodium-catalyzed reaction of Sb-aryl-1,5-azastibocines with α,β-unsaturated ketones and esters is described. Exclusive formation of 1,4-conjugate adduct was achieved in aqueous NMP (N-methyl-2-pyrrolidinone) in the presence of 5 mol% of [RhCl(cod)]2, and no formation of Heck adduct was observed in this condition. Reactions with various enones and enoates were also demonstrated to prove generality of the 1,4-conjugate addition.
报道了铑催化的Sb-芳基-1,5-氮杂锑烯与α,β-不饱和酮和酯的反应。在含水的NMP(N-甲基-2-吡咯烷酮)中,以5 mol%的[RhCl(cod)]2存在下,实现了1,4-共轭加成物的专一形成,未观察到 Heck 加成物的生成。还通过与多种烯酮和烯酯的反应证明了1,4-共轭加成的普遍性。