Diastereo- and Enantioselective Direct Henry Reaction of Pyruvates Mediated by Chiral P-Spiro Tetraaminophosphonium Salts
作者:Daisuke Uraguchi、Takaki Ito、Shinji Nakamura、Sawako Sakaki、Takashi Ooi
DOI:10.1246/cl.2009.1052
日期:2009.11.5
The stereoselective direct Henry reaction of pyruvates mediated by chiral P-spiro tetraaminophosphonium salts is described. High levels of diastereo- and enantioselectivities have been achieved by the use of l-valine-derived (P,S)-2e bearing para-chlorophenyl groups as a precatalyst.
介绍了手性 P-螺四氨基鏻盐介导的丙酮酸盐的立体选择性直接亨利反应。通过使用带有对氯苯基的 l-缬氨酸衍生 (P,S)-2e 作为前催化剂,实现了高水平的非对映和对映选择性。