Heterocyclic synthesis using nitrilimines: part 14. Synthesis of new pyrazole derivatives

摘要

A new series of 1,3,4,5-tetrasubstituted pyrazoles have beensynthesized by the 1,3-dipolar cycloaddition of suitable nitriliminesto 3-propylidene and 3-benzylidene-phthalide. Both analytical andspectroscopic data of all the synthesized compounds are in fullagreement with the proposed structures.