Provided is a method for resolution of formula 4-[4-dimethylamino-1-(4-fluorophenyl)-1-hydroxylbutyl]-3-hydroxy-methyl benzonitrile as an enantiomer thereof, comprising the following steps: a salt of (S)-4-[4-dimethylamino-1-(4-fluorophenyl)-1-hydroxylbutyl]-3-hydroxymethyl benzonitrile with a resolving agent D-(+)di-p-toluoyl tartaric acid was crystallized in a resolving solvent; the method is characterized in that the resolving solvent is an ether solvent. Also provided is a new crystal form of the resolved intermediate.
提供了一种用于分离公式4-[4-二甲基
氨基-1-(4-
氟苯基)-
1-羟基丁基]-
3-羟甲基苯甲腈的对映体的方法,包括以下步骤:将(S)-4-[4-二甲基
氨基-1-(4-
氟苯基)-
1-羟基丁基]-
3-羟甲基苯甲腈的盐与分离剂D-(+)二对
甲苯酰
酒石酸在分离溶剂中结晶;该方法的特点在于分离溶剂是
醚类溶剂。同时提供了已分离的中间体的新晶体形态。