Characterization of polymorphs and solvates of 3-amino-1-(m-trifluoromethylphenyl)-6-methyl-1H-pyridazin-4-one
✍ Scribed by Alain Chauvet; Jacqueline Masse; Jean-Paul Ribet; Dennis Bigg; Jean-Marie Autin; Jean-Louis Maurel; Jean-François Patoiseau; Joel Jaud
- Publisher
- John Wiley and Sons
- Year
- 1992
- Tongue
- English
- Weight
- 478 KB
- Volume
- 81
- Category
- Article
- ISSN
- 0022-3549
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📜 SIMILAR VOLUMES
## Abstract The new 1H‐pyrazole‐3‐carboxylic acid **2**, pyridazin‐3(2H)‐one **3**, and their various derivatives were prepared by the reactions of the 4‐benzoyl‐5‐phenyl‐2,3‐dihydro‐2,3‐furandione **1** and 2,5‐dichlorophenylhydrazine. Pyrazolo[3,4‐d]pyridazine **7** was obtained from cyclization
The title compound 3 was obtained during the rearrangement of isoxazol-5-yl hydrazine 1 to 1 -aminopyrazolone 2 at \(115^{\circ}\). X-ray analysis of the corresponding benzylidene derivative allowed us to achieve the structure assignment.