Tetrahedron p. 9303 - 9308 (2013)
Update date:2022-07-29
Topics:
Qi, Liang-Wen
Wang, Liang-Liang
Peng, Lin
Jia, Li-Na
Tian, Fang
Xu, Xiao-Ying
Wang, Li-Xin
Organocatalytic Michael-aldol-dehydration domino reaction of 3-(1-hydroxyethylidene)benzofuran-2(3H)-ones and enones catalyzed by Cinchona-based primary amine has been developed. The desired chiral spirocyclic benzofuranones were obtained in excellent stereoselectivities (dr>20:1 and up to 96% ee) and moderate to excellent yields (up to 98%).
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