Indium-mediated Barbier-type allylation of aldehydes as a convenient method for the highly enantioselective synthesis of homoallylic alcohols
作者:Lacie C. Hirayama、Soya Gamsey、Daniel Knueppel、Derek Steiner、Kelly DeLaTorre、Bakthan Singaram
DOI:10.1016/j.tetlet.2005.01.169
日期:2005.3
enantioselective allylation of both aromatic and aliphatic aldehydes using commercially available (1S,2R)-(+)-2-amino-1,2-diphenylethanol as a chiral auxiliary. Using only two equivalents of allyl bromide, excellent yields and very good to excellent enantioselectivities are obtained. To our knowledge, the enantioselectivities reported herein are the highest obtained for indium-promoted allylations of carbonyl
我们报告了使用市售(1 S,2 R)-(+)-2-氨基-1,2-二苯乙醇作为手性助剂的铟介导的芳香族和脂肪族醛的Barbier型对映选择性烯丙基化的一般方法。仅使用两个当量的烯丙基溴,可获得优异的产率和非常好的至优异的对映选择性。据我们所知,本文报道的对映选择性是由铟促进的羰基化合物的烯丙基化所获得的。