中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 1-(4-amino-phenyl)-4,5-dihydro-1H-pyrazol-3-ylamine | 15980-02-6 | C9H12N4 | 176.221 |
The invention comprises (1) compounds of the tautomeric formula: <;FORM:0776322/IV(b)/1>; where R is H or alkyl and X is alkyl, alkoxy, hydroxy, amino, halogen, carboxyl or sulphonic acid; and (2) the production of compounds of the above formula where X may also be H by alkaline hydrolysis of their p-N-acyl derivatives (X may also be acylamino hydrolysed simultaneously to amino). The starting materials can be obtained by the process of Specification 679,678 or 757,840. The products are stored as dihydrochlorides. Examples show the production of compounds in which R is H, methyl or ethyl and X is H, 2- or 3-methyl, 3-methoxy or 3-chloro, from their N-formyl and N-acetyl derivatives. Specification 679,677 also is referred to.;FORM:0776322/IV(b)/1>