in the title reaction. The inherent regioselectivity was overcome by the peptide catalyst to promote the 1,6‐selective reaction prior to 1,4‐reduction. High stereoconvergence was also achieved when using a mixture of geometric isomers of the starting aldehydes. Ach=1‐amino‐1‐cyclohexanecarboxylic acid.
在标题反应中使用了
树脂负载的肽催化剂(参见方案中的方框)。肽催化剂克服了固有的区域选择性,从而在1,4还原之前促进了1,6选择性反应。当使用起始醛的几何异构体的混合物时,也实现了高立体收敛性。Ach = 1-
氨基-1-
环己烷羧酸