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Catalysis by supported Lewis acids: An efficient method for transesterification of phosphotriesters

Paper ID Volume ID Publish Year Pages File Format Full-Text
42557 45931 2009 4 PDF Available
Title
Catalysis by supported Lewis acids: An efficient method for transesterification of phosphotriesters
Abstract

Lewis acids (ZnCl2, CoCl2, NiCl2, TiCl4, and CdCl2) when supported on silica gel can effectively catalyze transesterification of organophosphotriesters. In anhydrous acetonitrile and in the presence of excess alcohol, such reactions follow pseudo-first-order kinetics. Progress and efficacy of these reactions were monitored by UV–vis and 31P NMR spectroscopy.

Graphical abstractLewis acids (ZnCl2, CoCl2, NiCl2, TiCl4, and CdCl2) when supported on silica gel can effectively catalyze transesterification of organophosphotriesters. In anhydrous acetonitrile and in the presence of excess alcohol, such reactions follow pseudo-first-order kinetics. Progress and efficacy of these reactions were monitored by UV–vis and 31P NMR spectroscopy.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Phosphotriesters; Transesterification; Heterogeneous catalysis; Lewis acids; Silica gel
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Catalysis by supported Lewis acids: An efficient method for transesterification of phosphotriesters
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 365, Issue 2, 31 August 2009, Pages 149–152
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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