(2-chloro-2-nitroethenyl)benzenes as synthons: a general method for the preparation of 2,3-dihydro- 2-nitro-3-phenyl-4H-furo [3,2-c] [1]benzopyran-4-ones and 3-phenyl-4H-furo[3,2-c][1]benzopyran-4-ones
(2-chloro-2-nitroethenyl)benzenes as synthons: a general method for the preparation of 2,3-dihydro- 2-nitro-3-phenyl-4H-furo [3,2-c] [1]benzopyran-4-ones and 3-phenyl-4H-furo[3,2-c][1]benzopyran-4-ones
Efficient and mild synthesis of functionalized 2,3-dihydrofuran derivatives via domino reaction in water
作者:Jian-Wu Xie、Ping Li、Ting Wang、Fei-Ting Zhou
DOI:10.1016/j.tetlet.2011.02.093
日期:2011.5
An efficient and mild method for the synthesis of functionalized tricyclic 2,3-dihydrofurans, bicyclic 2,3-dihydrofurans, and other tetrasubstituted 2,3-dihydrofurans by dominoreaction of 1,3-dicarbonyl compounds and α-bromonitroalkenes with a large substrate scope and excellent diastereoselectivity (only trans isomers) in moderate to excellent yield (up to 96%) has been reported.