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Synthesis 2008(8): 1319-1322
DOI: 10.1055/s-2008-1032017
DOI: 10.1055/s-2008-1032017
PSP
© Georg Thieme Verlag Stuttgart · New York
Preparation of β-Amino Esters by a Chiral Brønsted Acid Catalyzed Mannich-Type Reaction
Further Information
Publication History
Received
5 September 2007
Publication Date:
10 January 2008 (online)


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