Abstract
Lipase PS from Burkholderia cepacia (formerly Pseudomonas cepacia) was successfully immobilized in sol–gels under low methanol conditions using lyophilization in order to dry the gel. The enzyme was also cross-linked with glutaraldehyde to CLEAs without any additives. These immobilized enzyme preparations were employed for the highly enantioselective acylations of 1-phenylethanol ( 1), 1-(2-furyl)ethanol ( 2) and N-acylated 1-amino-2-phenylethanol ( 3) with vinyl acetate in organic solvents. Enzymatic hydrolysis of the obtained ester product was observed as a side reaction of the acylation of 3 in the presence of lipase PS powder. Hydrolysis was suppressed when the immobilized preparations of lipase PS were used.
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