S-methyl β-hydroxysulfoxides of fairly high optical purity (up to 80%) may be prepared by direct asymmetric oxidation [ButO2H, Ti(OPri)4, (+)-DET] of acetylated or silylated S-methyl β-hydroxysulfides and subsequent deprotection. The upgrading of the optical purity from 78% up to >98% by simple crystallization has been obtained
Asymmetric Oxidation of Thioethers .5. Enantioselective Synthesis of Beta-hydroxysulfoxides By Direct Oxidation
LICINI, GIULIA MARINA;
1989
Abstract
S-methyl β-hydroxysulfoxides of fairly high optical purity (up to 80%) may be prepared by direct asymmetric oxidation [ButO2H, Ti(OPri)4, (+)-DET] of acetylated or silylated S-methyl β-hydroxysulfides and subsequent deprotection. The upgrading of the optical purity from 78% up to >98% by simple crystallization has been obtained
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