Asymmetric Intramolecular Oxa-Michael Reactions to Tetrahydrofurans/2<i>H</i>-Pyrans Catalyzed by Primary–Secondary Diamines
作者:Yingpeng Lu、Gang Zou、Gang Zhao
DOI:10.1021/cs4002332
日期:2013.6.7
The asymmetricintramolecularoxa-Michaelreactions of α,β-unsaturated ketones have been achieved by using readily accessible primary–secondary diamines as the organocatalysts, giving the synthetically useful tetrahydrofurans/2H-pyrans in good yields and with high enantioselectivities (up to 90% ee).