Tetrahedron Asymmetry p. 3657 - 3664 (1997)
Update date:2022-08-28
Topics:
Ruppert, Stephan
Gais, Hans-Joachim
Colyophilization of pig liver esterase with methoxypolyethylene glycol gave a catalyst, PLE/MPEG, which showed an enhanced activity in organic solvents. The PLE/MPEG catalyzed transesterification of the alcohols rac-1a- d with vinyl propionate in toluene proceeded with good to high selectivities. The addition of up to 1% of water to the reaction mixture resulted in a significant increase in enantioselectivity. Immobilization of PLE/MPEG for the batch-wise resolution was accomplished by its spontaneous adsorption on an ultrafiltration membrane.
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