Erythro-3-hydroxy-2-methylpropionates or erythro-3-hydroxy-2-methylpropionamides were prepared with high stereoselectivity by NaBH4 reduction of the corresponding 3-keto esters or 3-keto amides in the presence of a catalytic amount of MnCl2.
在催化量的MnCl 2存在下,通过NaBH 4还原相应的3-酮基酯或3-酮基酰胺,以高立体选择性制备赤型-3-羟基-2-甲基
丙酸酯或赤型3-羟基-2-甲基丙酰胺。。