Abstract

AbstractTwo series of imidazoles are prepared: i) reaction of thiosemicarbazones (I) with dimethylacetylenedicarboxylate (II) furnishes the imidazoles (III) in good yields; ii) trisubstituted imidazoles (VI) are obtained by refluxing diketones (IV) with pyrazolecarbaldehydes (V) and ammonium acetate via Debus reaction.

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