Reaction of 1-methyl-4-nitro-pyrazole with 4-amino-1,2,4-triazole
✍ Scribed by V. N. Elokhina; O. V. Krylova; L. I. Larina; A. S. Nakhmanovich; M. S. Sorokin; K. A. Volkova; V. A. Lopyrev
- Publisher
- Springer US
- Year
- 2000
- Tongue
- English
- Weight
- 86 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0009-3122
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## Abstract 4‐Aminopyrazole‐3‐ones **4b, e, f** were prepared from pyrazole‐3‐ones **1b‐d** in a four‐step reaction sequence. Reaction of the latter with methyl __p__‐toluenesulfonate gave 1‐methylpyrazol‐3‐ones **2b‐d**. Compounds **2b‐d** were treated with aqueous nitric acid to give 4‐nitropyraz
In the title compound, C 9 H 12 N 6 OS, the pyrazole and triazole rings are nearly coplanar, forming a dihedral angle of 6.50 (9) . There are N-HÁ Á ÁN intermolecular hydrogen-bond interactions in the crystal structure, providing stabilization.