Benzyl alcohols, ethers or esters, having a chiral center at the benzylic carbon can be conveniently racemized by treatment with solid acids which are strongly acidic cation exchange materials. Racemization may be effected generally in the range from 20-150°C in aqueous or partly aqueous systems in combination with a water-miscible organic solvent to improve solubility of the benzyl compund. Recycling of unwanted enantiomers obtained in the resolution of racemic mixtures is thus facilitated.
苄基醇、醚或酯的苄基碳上有一个手性中心,可以通过使用固体酸(强酸性阳离子交换材料)进行消旋化。消旋化一般可在 20-150°C 的范围内,在
水性或部分
水性体系中与
水混溶的有机溶剂结合使用,以提高苄基化合物的溶解度。这样可以促进外消旋混合物分解过程中产生的不需要的对映体的回收利用。