Enantioselective Assembly of Substituted Dihydropyrones via Organocatalytic Reaction in Water Media
摘要:
The diarylprolinol ether/HOAc-catalyzed cascade Michael addition and cyclization of aldehydes and alpha-keto-alpha,beta-unsaturated esters proceeds smoothly in water to afford cyclic hemiacetals, which are oxidized to furnish highly functionalized 3,4,5,6-tetrasubstituted dihydropyrones with excellent enantioselectivities.
Enantioselective Assembly of Substituted Dihydropyrones via Organocatalytic Reaction in Water Media
摘要:
The diarylprolinol ether/HOAc-catalyzed cascade Michael addition and cyclization of aldehydes and alpha-keto-alpha,beta-unsaturated esters proceeds smoothly in water to afford cyclic hemiacetals, which are oxidized to furnish highly functionalized 3,4,5,6-tetrasubstituted dihydropyrones with excellent enantioselectivities.
Enantioselective Assembly of Substituted Dihydropyrones via Organocatalytic Reaction in Water Media
作者:Jing Wang、Fang Yu、Xiaojing Zhang、Dawei Ma
DOI:10.1021/ol800835m
日期:2008.6.1
The diarylprolinol ether/HOAc-catalyzed cascade Michael addition and cyclization of aldehydes and alpha-keto-alpha,beta-unsaturated esters proceeds smoothly in water to afford cyclic hemiacetals, which are oxidized to furnish highly functionalized 3,4,5,6-tetrasubstituted dihydropyrones with excellent enantioselectivities.