Abstract
Mannich-type reactions of ketene silyl acetals with aldimines proceeded smoothly under the influence of 10 mol% of a cyclic chiral phosphate derivative derived from (R)-BINOL as a chiral Brønsted acid catalyst to furnish β-amino esters with excellent enantioselectivities.
Key words
chiral Brønsted acid - asymmetric synthesis - catalyst - Mannich-type reaction - β-amino esters
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