Hydrazine hydrate (1:1) → N-{4-[4-(4-methoxyphenyl)-1-piperazinyl]phenyl}hydrazinecarboxamide

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반응 단계

A mixture of 3.2 parts of phenyl{4-[4-(4-methoxyphenyl)-1-piperazinyl]phenyl}carbamate, 50 parts of hydrazine hydrate and 100 parts of 1,4-dioxane is stirred and refluxed for 3 hours. The reaction mixture is cooled and poured onto water. The precipitated product is filtered off and crystallized from N,N-dimethylformamide, yielding 1.7 parts (63%) of N-{4-[4-(4-methoxyphenyl)-1-piperazinyl]phenyl}hydrazinecarboxamide; mp. +300° C.

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