Abstract
Treatment of 2‐tosyloxybenzylidinethiosemicarbazone (2) with active halo compounds afforded thiazoles 3–5. Moreover, reaction of compound 2 with acetic anhydride or dimethylformamide dimethylacetal gave N,N diacetyl 6 and dimethylamino derivatives 7, respectively. Cyclization of thiazole derivatives 3 with some arylidenemalononitriles yielded thiazolo[2,3‐d]pyrans 8–12. Multicomponent reaction of 2‐tosyloxybenzaldehyde (1) with urea, thiourea, or compound 2 and ethyl acetoacetate or acetylacetone afforded pyrimidines 13–14. The structures of compounds were elucidated by elemental and spectral analyses.
Published Version
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