Chiral Bronsted Acids and Their Calcium Salts in Catalytic Asymmetric Mannich Reactions of Cyclic 1,3-Diketones
[摘要]:Asymmetric calcium-catalyzed direct Mannich reactions of 1,3-dicarbonyl compounds with imines have been developed. The reactions proceed under mild conditions and provide the corresponding products with high enantiomeric excess.
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