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Heterocyclic synthesis using nitrilimines: part 14. Synthesis of new pyrazole derivatives
Nitrilimines 1,3-dipolar cycloaddition phthalides pyrazoles
2010/10/18
A new series of 1,3,4,5-tetrasubstituted pyrazoles have been synthesized by the 1,3-dipolar cycloaddition of suitable nitrilimines to 3-propylidene and 3-benzylidene-phthalide. Both analytical and spe...
Heterocyclic Synthesis Using Nitrilimines: Part 5. Synthesis of Some Novel Spiro Heterocycles
Cycloaddition benzoylhydrazones nitrilimines spiro-triazoles
2010/4/19
A new class of spiro-triazoles (4a-m) were synthesized from the reaction of corresponding nitrilimines 2 with substituted heterocyclic benzoylhydrazones 3 in good yields. The spectral data of the new ...