Boronic acid catalysts and methods of use thereof for activation and transformation of carboxylic acids
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United States of America Patent
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Mar 15, 2016
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May 22, 2014
app pub date -
Feb 14, 2012
filing date -
Feb 14, 2011
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Abstract
The present application provides methods and catalysts for activation of carboxylic acids for organic reactions. In particular, methods are disclosed for direct nucleophilic addition reactions, such as, amidation reactions with amines, cycloadditions, and conjugate additions, using boronic acid catalysts of formula I, II or III: Also included are novel boronic acid catalysts of formula IV, V and III:
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