CYCLOKETONES AS PRECURSOR FOR CONVENIENT SYNTHESIS OF AZOLOPYRIMIDINES AND 5-ARYLAZOTHIAZOLES
Sayed A. Ahmed, Nadia A. Abdelriheem, Abdou O. Abdelhamid.
Abstract
Condensation of sodium (3-oxocycloalkylidene)methenolate with several heterocyclic amines afforded pyrazolo[1,5-a]pyrimidine and
pyrazolo[1,5-a]quinazoline derivatives. Also, 2-(2-cycloalkylidenehydrazinyl)-4-substituted-5-(phenyldiazenyl)-thiazole derivatives were
synthesized via reaction of hydrazonoyl halides with 2-cycloalkylidene-hydrazinecarbothioamide. Structures of the newly synthesized
compounds were elucidated by elemental analysis, spectral data, alternative synthethic routes and chemical transformation whenver
possible.
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