The invention relates to a method for preparing a sulphoxide compound of formula (I) either as a single enantiomer or in an enantiomerically enriched form, comprising the steps of : a) contacting a pro-chiral sulphide of formula (II) with a metal chiral complex, a base and an oxidizing agent in an organic solvent ; and optionally b) isolating the obtained sulphoxide of formula (I), wherein n, Y, R1, R1a, R2 and R2a are as defined in claim 1.
本发明涉及一种制备化合物式(I)的
硫氧化物的方法,可以制备出单对映体或对映富集形式,包括以下步骤:a)将化合物式(II)的原手性
硫化物与
金属手性配合物、碱和
氧化剂在有机溶剂中接触;可选地b)分离所得的化合物式(I)的
硫氧化物,其中n、Y、R1、R1a、R2和R2a如权利要求1所定义。