Enantioselectivity Induced by Oxazaborolidine Supported on Mesoporous Silica or by Its Analog in Homogeneous PhaseReport as inadecuate




Enantioselectivity Induced by Oxazaborolidine Supported on Mesoporous Silica or by Its Analog in Homogeneous Phase - Download this document for free, or read online. Document in PDF available to download.

Institut Charles Gerhardt Montpellier, UMR 5253 CNRS-ENSCM-UM2-UM1, Matériaux Avancés pour la Catalyse et la Santé, « MACS » - 8, rue de l’Ecole Normale, 34296 Montpellier cedex 5, France





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Abstract The impact of immobilization of oxazaborolidines supported on silica via different substituents on the boron and nitrogen atoms is evaluated in the enantioselective reduction of acetophenone. The performances of the homogeneous analog oxazaborolidines and silica supported-ones are compared by varying different parameters. This article deals with the synthesis, characterization and catalytic evaluation of silica-supported oxazaborolidines, their recycling capabilities and regeneration limitations.

Keywords: oxazaborolidine; supported catalyst; mesoporous silica; asymmetric reduction of acetophenone oxazaborolidine; supported catalyst; mesoporous silica; asymmetric reduction of acetophenone





Author: Jeremy H. Yune, Françoise Quignard and Karine Molvinger *

Source: http://mdpi.com/



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