A highly stereoselective entry to α-hydroxy carboxylic acids using d-fructose diacetonide as a chiral auxiliary
作者:Hongwu Yu、C.Eric Ballard、Binghe Wang
DOI:10.1016/s0040-4039(01)00043-0
日期:2001.3
Protected α-hydroxy carboxylicacids were synthesized in moderate yield and high diastereoselectivity by alkylation of glycolate ester enolates using a d-fructose-derived chiral auxiliary. The new chiral center was assigned the (R)-configuration based upon comparisons to the literature. Both enantiomers of the auxiliary are readily available.