Synthesis of a novel bismesoionic phenylsydnonyl-muenchnone system as an in-situ intermediate intended for the preparation of phenylsydnonyl-heterocycles

Article abstract of DOI:10.1246/cl.1999.513

The title bismesoionic system was generated in-situ by the treatment of N-(3-phenylsydnonyl-4-carbonyl)-N-substituted amino acid with acid anhydride. The sydnonyl muenchnone reacted with DMAD and gave phenylsydnonyl-pyrrole.