High Stereocontrol in Aldol Reaction with Ketones: Enantioselective Synthesis of β-Hydroxy γ-Ketoesters by Ester Enolate Aldol Reactions with 2-Acyl-2-alkyl-1,3-dithiane 1-Oxides
作者:José L. García Ruano、David Barros、M. Carmen Maestro、Alexandra M. Z. Slawin、Philip C. Bulman Page
DOI:10.1021/jo000494i
日期:2000.9.1
2-acyl dithiane oxides, with lithiumenolates derived from several esters and lactones, proceeds with a high degree of stereocontrol at both carbonyl and enolate prochiral centers, the stereocontrol mainly determined by the configuration of the sulfoxide sulfur atom. The sense of induced stereochemistry observed for ester enolates is different from that seen for lactone enolates. Hydrolysis of the dithiane