The interaction of 2-chloro-3H-indole-3-one with hydrazine hydrate gives us a result of 2-hydrazino-3H-indol-3-one which reacts with acetic acid (acetic anhydride) to give 1 - (3-oxo-3H-indol-2 -yl) semicarbazide, which cyclized under the action of phosphorus oxychloride in 3-methyl-9H-[1,2,4] triazolo [4,3-a]indol-9-one.
2-хлор-3Н-индол-3-он, триазолы, аннелирование, гидразинозамещённыегетероциклы, спектр ЯМР, химический сдвиг, 2-chloro-3H-indole-3-one, triazoles, annulation, hydrazine-substituted heterocycles, NMR, chemical shift
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