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Production of alpha-hydroxy carboxylic acids and esters from higher sugars using tandem catalyst systems

United States Patent

9,809,528
November 7, 2017
View the Complete Patent at the US Patent & Trademark Office
The present disclosure is directed to methods and composition used in the preparation of alpha-hydroxy carboxylic acids and esters from higher sugars using a tandem catalyst system comprising retro-aldol catalysts and Lewis acid catalysts. In some embodiments, these alpha-hydroxy carboxylic acids may be prepared from pentoses and hexoses. The retro-aldol and Lewis catalysts may be characterized by their respective ability to catalyze a 1,2-carbon shift reaction and a 1,2-hydride shift reaction on an aldose or ketose substrate.
Orazov; Marat (Pasadena, CA), Davis; Mark E. (Pasadena, CA)
California Institute of Technology (Pasadena, CA)
15/ 207,822
July 12, 2016
GOVERNMENT RIGHTS This invention was made with government support under Grant No. DE-SC0001004/T-108118 awarded by the Department of Energy. The government has certain rights in the invention.