A process has been developed for the enzymatic esterification of 1,2-diol monosulfonates comprising contacting an ester; a 1,2-diol monosulfonate; an enzyme derived from a microorganism or animal organ which has stereoselective activity to asymmetrically esterify said 1,2-diol monosulfonate; in the presence of a nonhydroxylic organic solvent and an amine additive of the general formula R³₂R⁴N, wherein
R³ may be the same or different and is selected from hydrogen or a straight or branched C₁-C₂₀ alkyl; and
R⁴ is a straight or branched C₁-C₂₀ alkyl; or an unsubstituted or substituted C₃-C₂₀ aryl or heteroaryl group (with said substituent selected from C₁-C₄ alkyl, halogen, or C₁-C₄ alkoxy, and said hetero atom selected from nitrogen, sulfur, or oxygen);
to produce a mixture of enantiomerically enriched unreacted 1,2-diol monosulfonate and the corresponding antipodal enantiomerically enriched ester. The resulting enantiomerically enriched products are useful chemical intermediates that may be employed in the synthesis of pharmaceutical and agricultural chemicals.
已开发出一种 1,2
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磺酸盐的酶法酯化工艺,该工艺包括:在非羟基有机溶剂和通式为 R³₂R⁴N的胺添加剂存在下,使
酯类;1,2
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磺酸盐;来自微
生物或动物器官的酶,该酶具有立体选择性活性,可不对称地酯化所述 1,2
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磺酸盐,其中
R³ 可以相同或不同,选自氢或直链或支链 C₁-C₂₀ 烷基;以及
R⁴ 是直链或支链 C₁-C₂₀ 烷基;或未取代或取代的 C₃-C₂₀ 芳基或杂芳基(所述取代基选自 C₁-C₄ 烷基、卤素或 C₁-C₄ 烷氧基,所述杂原子选自氮、
硫或氧);
生成对映体富集的未反应的 1,2
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磺酸盐和相应的对映体富集酯的混合物。生成的对映体富集产品是有用的
化学中间体,可用于合成医药和农用
化学品。