Catalytic asymmetric 1,3-dipolar cycloaddition of N-unprotected 2-oxoindolin-3-ylidene derivatives and azomethine ylides for the construction of spirooxindole-pyrrolidines
The copper-catalyzed asymmetric construction of a dispiropyrrolidine skeleton via 1,3-dipolar cycloaddition of azomethine ylides to α-alkylidene succinimides
作者:Wu-Lin Yang、Yang-Zi Liu、Shuai Luo、Xingxin Yu、John S. Fossey、Wei-Ping Deng
DOI:10.1039/c5cc02362a
日期:——
A highly efficient asymmetric 1,3-dipolarcycloaddition of azomethineylides to [small alpha]-alkylidene succinimides catalyzed by a novel chiralN,O-ligand/Cu(OAc)2 system is reported, affording dispiropyrrolidine derivatives with spiro quaternary stereogenic centers in...