Construction of spirocycles containing highly substituted pyrroli-dine and 1-indanone motifs with spiro quaternary stereogenic centers via 1, 3-dipolar cycloaddition of 2-alkylidene-1-indanone and azomethine ylides promoted by simple imidazolium salts1. Issue 87 (20th September 2015) - Hu, Wei-Qiang
Abstract The 1, 3-dipolar cycloaddition of 2-alkylidene-1-indanone with azomethine ylides has been successfully developed promoted by simple imidazolium salts to construct a variety of spirocycles, containing highly substituted pyrrolidines, in excellent yields (up to 99%).