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, R
1
, R
1a
, R
2
and R
2a
are as defined in claim
1.
该发明涉及一种制备公式(I)的砜氧化物化合物的方法,该化合物可以是单对映体或对映富集形式,包括以下步骤:a)将公式(II)的原手性
硫醚与
金属手性配合物、碱和氧化剂在有机溶剂中接触;以及可选地b)分离得到的公式(I)的砜氧化物。其中n、Y、R1、R1a、R2和R2a如权利要求1所定义。