SYNTHESIS OF 4-DIAZO-3,5-DINITROPYRAZOLE AND CHARACTERISTIC FEATURES OF ITS BEHAVIOR TOWARDS NUCLEOPHILES

Authors
DALINGER IL CHERKASOVA TI SHEVELEV SA
Citation
Il. Dalinger et al., SYNTHESIS OF 4-DIAZO-3,5-DINITROPYRAZOLE AND CHARACTERISTIC FEATURES OF ITS BEHAVIOR TOWARDS NUCLEOPHILES, Mendeleev communications, (2), 1997, pp. 58-59
Citations number
11
Categorie Soggetti
Chemistry
Journal title
Mendeleev communications → ACNP
ISSN journal
09599436
Issue
2
Year of publication
1997
Pages
58 - 59
Database
ISI
SICI code
0959-9436(1997):2<58:SO4ACF>2.0.ZU;2-I
Abstract
Diazopyrazole containing two nitro groups in the ring -4-diazo-3,5-din itropyrazole - has been synthesised for the first time by diazotisatio n of the corresponding aminodinitropyrazole. 4-Diazo-3,5-dinitropyrazo le reacts with salts of methylene-active compounds, CH2(CN)NO2 and CH2 (COCH3)(2), to give azo coupling products, whereas its interaction wit h nucleophiles such as Br-, N-3 or H2O(H+) involves replacement of one of the nitro groups yielding 4-diazo-3-R-5-nitropyrazoles.