Preparation of a Fluorous Chiral BINOL Derivative and Application to an Asymmetric Protonation Reaction
作者:Yutaka Nakamura、Seiji Takeuchi、Yoshiaki Ohgo、Dennis P. Curran
DOI:10.1016/s0040-4020(99)01004-2
日期:2000.1
Fluorous Chiral Proton Source (R,S)-FDHPEB resulted in a higher enantioselectivity (95% ee) than that of the original nonfluorous (R,S)-DHPEB (87% ee) in an enantioselective protonation of a samarium enolate. (R,S)-FDHPEB was easily recovered by a simple filtration through a fluorous reverse phase silica gel and was recyclable.
在a烯醇sa的对映选择性质子化中,氟手性质子源(R,S)-FDHPEB的对映选择性(95%ee)比原始的无氟(R,S)-DHPEB(87%ee)高。(R,S)-FDHPEB易于通过含氟反相硅胶的简单过滤而回收,并且是可回收的。