Koutek,B. et al., Collection of Czechoslovak Chemical Communications, 1976, vol. 41, p. 2250 - 2255
作者:Koutek,B. et al.
DOI:——
日期:——
Enantioselective 1,6-Addition of β-Ketoester Enolates to <i>In Situ</i> Generated <i>para</i>-Quinone Methides Enabled by Cooperative Palladium and Brønsted Acid Catalysis
作者:Cornelius V. Gärtner、Christoph Schneider
DOI:10.1021/acs.orglett.2c04127
日期:2023.1.20
We report herein an asymmetric cooperative process for the enantioselective 1,6-addition of β-ketoesters to in situ generated para-quinone methides with chiral Pd–aqua complexes as mixed Brønsted acid–base catalysts. Excellent yields, outstanding enantiocontrol, and good diastereoselectivity across a broad substrate range are highlights of this transformation. The utility of this reaction is further