Lewis Base-Catalysed Mukaiyama–Aldol Reaction of Trimethylsilyl Enolates with Aldehydes
作者:Xingxian Zhang、Junchen Shi、Shenghui Hu
DOI:10.3184/030823410x12733354109885
日期:2010.5
efficient Mukaiyama-type aldol reaction of three typical silyl enolates, such as 1-(trimethylsiloxy)-1-methoxy-2-methyl-2-propene, 1-phenyl-1-trimethylsilyloxyethene and 1, 2-bis(trimethylsiloxy)cyclobutene, with aryl aldehydes and α,β–unsaturated aldehydes catalysed by 5 mol% of Lewis base catalyst 4-O2NPhOMgI in dichloromethane is described. The reaction proceeds under mild reaction conditions in good
三种典型甲硅烷基烯醇化物的高效 Mukaiyama 型羟醛反应,如 1-(三甲基甲硅烷氧基)-1-甲氧基-2-甲基-2-丙烯、1-苯基-1-三甲基甲硅烷氧基乙烯和 1, 2-双(三甲基甲硅烷氧基)环丁烯,描述了芳基醛和 α,β-不饱和醛由 5 mol% 的路易斯碱催化剂 4-O2NPhOMgI 在二氯甲烷中催化。该反应在温和的反应条件下以良好至极好的产率进行。