Cyclocondensation of AcylketeneS,N- andN,N-acetals with Maleic Anhydride and Maleimide: A Facile One-Step Synthesis of Pyrano [3,4-c]pyrrole, Pyrrolo [3,4-c]pyridine and Condensed Pyrrole Derivatives
Cyclocondensation of AcylketeneS,N- andN,N-acetals with Maleic Anhydride and Maleimide: A Facile One-Step Synthesis of Pyrano [3,4-c]pyrrole, Pyrrolo [3,4-c]pyridine and Condensed Pyrrole Derivatives