[3+2]-Cycloaddition of azomethine ylides to 5-methylidene-3-aryl-2-сhalcogen-imidazolones: access to dispiro indolinone-pyrrolidine-imidazolones

Abstract

A synthesis of dispiro derivatives from 5-methylidene-2-chalcogenimidazolones and azomethine ylides generated from isatins and N-substituted α-amino acids has been developed.

Keywords

• dispiro derivatives
• 1,3-dipolar cycloaddition
• azomethine ylides
• 5-methylidene-2-chalcogen-imidazolones