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Gas-phase stereoselective binding to Mn/salen catalysts
Authors:Fagin Adelaide E  Wang Guoping  Lau Michel C  Gronert Scott
Institution:Department of Chemistry and Biochemistry, San Francisco State University, San Francisco, CA 94132, USA.
Abstract:Gas-phase equilibrium measurements have been used to determine the stereoselectivity of binding the enantiomers of 1-phenylethanol to manganese/salen asymmetric epoxidation catalysts. There is significant selectivity in the gas-phase binding, and the results are compared to data from condensed-phase epoxidations. The study demonstrates the utility of a novel internal standard approach that allows for rapid, accurate measures of the stereoselectivity of gas-phase ligand binding. Moreover, the data suggest that gas-phase binding stereoselectivity could be a potential predictor of condensed-phase enantioselectivity.
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