Cooperative Catalytic Reactions Using Lewis Acids and Organocatalysts: Enantioselective Propargylic Alkylation of Propargylic Alcohols Bearing an Internal Alkyne with Aldehydes
作者:Kazuki Motoyama、Masahiro Ikeda、Yoshihiro Miyake、Yoshiaki Nishibayashi
DOI:10.1002/ejoc.201100044
日期:2011.4
The enantioselective propargylic alkylation of propargylic alcohols bearing an internal alkyne moiety with aldehydes in the presence of a metal salt as the Lewis acid and an optically active secondary amine as the co-catalyst has been found to give the corresponding propargylic alkylated products in high yields as a mixture of two diastereoisomers with high enantioselectivity.
已发现在作为路易斯酸的金属盐和作为助催化剂的光学活性仲胺的存在下,带有内部炔部分的炔丙醇与醛的对映选择性炔丙基烷基化以高产率得到相应的炔丙基烷基化产物,如具有高对映选择性的两种非对映异构体的混合物。