A process for producing a compound of formula (I) is provided. The process comprises reacting a mixture comprising a compound of formula (IIA) and a compound of formula (IIB) with an alkyl alcohol in the presence of a Candida antarctica lipase B enzyme to produce a product comprising the compound of formula (I) and the compound of formula (IIB); wherein R1 is C1 to C6 alkyl; and wherein R2 is H or C1 to C12 alkyl. Also provided are processes for the production of R-lactic acid, oligomeric R-lactic acid, R,R-lactide, poly-R-lactic acid, alkyl S-lactate, S-lactic acid, oligomeric S-lactic acid, S,S-lactide, poly S-lactic acid and stereocomplex polylactic acid.
提供一种制备化合物(I)的方法。该方法包括在存在Candida antarctica
脂肪酶B酶的情况下,通过反应含有化合物(IIA)和化合物(IIB)的混合物与烷基醇来制备含有化合物(I)和化合物(IIB)的产物;其中R1为C1至C6烷基;R2为H或C1至C12烷基。还提供了生产R-
乳酸、寡聚R-
乳酸、R,R-内酯、聚R-
乳酸、烷基S-
乳酸、S-
乳酸、寡聚S-
乳酸、S,S-内酯、聚S-
乳酸和立体复合聚
乳酸的方法。