Utility of (E)-4-(acetylamino)phenyl-4-oxo-2-butenoic acid with new sulfur reagents e.g. 2-amino-5-aryl-thiadiazoles 2 to afford the
corresponding adducts (3, 4, 5, 6). Reaction of the latter compounds with different electrophilic and nucleophilic reagents affords some
important heterocycle such as various furanones, thiadiazoles, pyridazinones, imidazolo[2,3-b]1,3,4-thiadiazoles, thiadiazolopyrimidines,
bezoxazinones, fused quinoxalinylquinazolinones
Key words: (E)-4-aryl-4-oxo-2-butenoic acid , furanones, thiadiazoles, pyridazinones, imidazolo[2,3-b]1,3,4-thiadiazoles,
thiadiazolopyrimidines, bezoxazinones, fused quinoxalinylquinazolinones
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