Synthesis of some newer indazolyl-oxadiazoles, thiadiazoles and 1,2,4-Triazoles
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2-Aryl-3-chloro-2H-indazole (4), obtained in excellent yield (>90%) by the action of thionyl chloride on o-azidobenzanilide(3), was allowed to condense with ethyl p-aminobenzoate to afford the corresponding indazolo-ester (6). This latter compound was converted into a new series of 2-aryl-indazole systems containing the potentially antimicorbial oxadiazole, thiadiazole and 1,2,4-triazole moieties (9,10, 13 & 14). Some of the newly synthesized compounds were tested for biological activity.