作者:Serkan Simsek、Melanie Horzella、Markus Kalesse
DOI:10.1021/ol702640w
日期:2007.12.1
delta-Hydroxy-alpha,beta-unsaturated carbonyl compounds were prepared in one step via the vinylogous Mukaiyama aldol reactions with O,O-silyl ketene acetals. Isopropyl alcohol as additive and tryptophane-based B-phenyloxazaborolidinone were required for obtaining the gamma-alkylated product in high enantioselectivities.
通过乙烯基的Mukaiyama醇醛醇缩醛与O,O-甲硅烷基乙烯酮缩醛的一步制备δ-羟基-α,β-不饱和羰基化合物。为了获得高对映选择性,需要使用异丙醇作为添加剂和色氨酸基B-苯基氧杂氮杂硼烷酮。