Selective Synthesis Dispiro[indoline‐3,2′‐pyrrolidine‐3′,3″‐quinoline] Derivatives and Spiro[imidazole‐4,3′‐quinoline] Derivatives via 1,3‐Dipolar Cycloaddition Reaction

A new class of spiro compounds as dispiroindoline‐3,2′‐pyrrolidine‐3′,3″‐quinoline] and spiroimidazole‐4,3′‐quinoline] have been developed from quinolone derivative adopting modern synthetic methodologies.