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ChemicalBook CAS DataBase List 4-PHENYLSEMICARBAZIDE
537-47-3

4-PHENYLSEMICARBAZIDE synthesis

11synthesis methods
-

Yield: 72%

Reaction Conditions:

with hydrazine hydrate for 20 h;Reflux;

Steps:

1.2 Preparation of aniline formylhydrazide intermediates
A solution of ethyl aniline carboxylate (16 g, 0.18 mol)And 80% hydrazine hydrate (90 g, 1.80 mol)In a 100 mL three-necked round bottom flask,The temperature was raised to reflux for 20 h.After cooling, white crystals were precipitated,Pumping aniline formyl hydrazide,Recrystallization from absolute ethanol gave a white flaky crystal of 19 g in 72% yield.

References:

GUIZHOU UNIVERSITY;YANG, SONG;KUANG, JIQING;DENG, HUABO;XUE, WEI;WU, ZHIBING;WU, SHIXI;ZHANG, TENGTENG;CHEN, YUTING;ZHOU, QING;YE, YIQIANG CN103980223, 2016, B Location in patent:Paragraph 0095-0096

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