期刊
ORGANIC PROCESS RESEARCH & DEVELOPMENT
卷 25, 期 3, 页码 576-582出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.oprd.0c00522
关键词
direct asymmetric reductive amination; chiral primary amine; cGMP; iPr-DUPHOS; dtbm-Segphos; ruthenium
Direct asymmetric reductive amination is an efficient method for converting ketones to alpha-chiral primary amines, but reported examples are limited. This study developed two sets of Ru-catalyzed conditions for direct conversion of aryl methyl ketone to pharmaceutically relevant chiral primary amine, achieving >93% ee on multikilogram scale.
Direct asymmetric reductive amination represents an efficient means of converting ketones to alpha-chiral primary amines, but reported examples are very limited. We describe the development of two sets of Ru-catalyzed conditions for the direct conversion of an aryl methyl ketone to a pharmaceutically relevant chiral primary amine. In the presence of NH3, NH4Cl, and H-2, a readily available dtbm-Segphos ruthenium catalyst can be used to prepare the desired chiral primary amine with >93% ee on multikilogram scale.
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