1 2 the hope of obtaining chiral sulfoxides 2 of greater chemical and optical purity in higher yields. The reactions were carried out in a standard way; ie, the Grignard reagent in benzene was added dropwise to a benzene solution of menthyl sulfinate 1 at room temperature. The reaction mixture was stirred for ea. 30 min to give a clear solution. After the typical workup (hydrolysis with saturated ammonium chloride solution, extraction) chiral ...
