Immobilization does not influence the enantioselectivity of CAL-B catalyzed kinetic resolution of secondary alcohols
                                
                                    
                                        作者:Elisabeth Egholm Jacobsen、Liv Siri Andresen、Thorleif Anthonsen                                    
                                    
                                        DOI:10.1016/j.tetasy.2004.11.081
                                    
                                    
                                        日期:2005.2
                                    
                                    Decreasing enantioselectivity (E-value) by increasing conversion has been observed in transesterification reactions of secondary alcohols catalyzed by a pure protein formulation of lipase B from Candida antarctica (Novozym 525 F). Addition of a range of enantiopure alcohols caused a temporary increase in selectivity of the transesterification reaction of 3-chloro-1-phenoxy-2-propanol with vinyl butanoate. The corresponding immobilized lipase B, (Novozym 435) showed a similar relationship between the E-value and degree of conversion. (C) 2004 Elsevier Ltd. All rights reserved.