Organocatalytic enantioselective Michael reaction of 1,3-dicarbonyls with α-substituted β-nitroacrylates
作者:Hsuan-Hao Chang、Kai-Ti Chu、Ming-Hsi Chiang、Jeng-Liang Han
DOI:10.1016/j.tet.2016.12.039
日期:2017.2
An efficient asymmetric Michaelreaction of 1,3-dicarbonyl compounds with α-Substituted-β-Nitroacrylates has been developed by using a cinchona-thiourea bifunctional organocatalyst in high yields and enantioselectivies. One of adducts could be transformed into a chiral β-nitroester bearing an isoxazole skeleton and an all-carbon quaternary chiral center.