Asymmetric alkylation of an α-keto ester with chiral lithium alkoxy-tributylaluminates
作者:D. Abenhaïm、G. Boireau、B. Sabourault
DOI:10.1016/s0040-4039(00)77402-8
日期:1980.1
tetrabutylaluminate modified by either (-)-N-methylephedrine or Darvon alcohol[(*)-(2S, 3R)-4-dimethylamino-3-methyl-1,2-diphenyl-2-butanol] readily reacts with phenylglyoxylic acid methyl ester to give the expected α-butyl α-hydroxy ester with a good chemical yield and an optical yield of 43% when Darvon alcohol is used.