NUCLEOPHILIC SUBSTITUTION ON SULFUR WITH RETENTION OF CONFIGURATION IN THE FORMATION OF o-METHOXYPHENYL PHENYL-N-POLYHALOACETYLSULFILIMINES

Abstract
Optically active o-methoxyphenyl phenyl-N-polyhaloacetylsulfilimines obtained in good yields upon simple treatment of a mixture of o-methoxyphenyl phenyl sulfide and t-butyl hypochlorite in the presence of l-menthol and polyhaloacetamide anion, are found to be rich in R-configuration. This means that the nucleophilic substitution of the incipiently formed (Rs)-l-menthyloxysulfonium salt with the polyhaloacetamide anion proceeds with retention of configuration.