拆分法制L—2—哌啶酸
2002
以dl-2-哌啶酸为原料通过拆分制得L-2-哌啶酸.用D-(-)-酒石酸与dl-2-哌啶酸成盐的化学法,结合选择吸附法和晶种结晶法制得纯度较高的单一异构体.制得L-2-哌啶酸总收率为70.8%,纯度为99.4%,可作为合成纯左旋体罗哌卡因的起始原料.化学成盐拆分法结合选择吸附法和晶种结晶法能制得高纯单一异构体.
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