Cycloketones as Precursor for Convenient Synthesis of Azolopyrimidines and 5-Arylazothiazoles

Abdou Osman 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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DOI: http://dx.doi.org/10.17628/ecb.2014.3.1038-1045

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