A facile regio- and stereoselective synthesis of novel spiro[indolin-3,2′-pyrrolidin]-2-one’s via 1,3-dipolar cycloaddition of azomethine ylides

A facile regio and stereoselective synthesis of novel spiro[indolin-3,2′-pyrrolidin]-2-one’s have been accomplished through 1,3-dipolar cycloaddition of azomethine ylides generated in situ from the...