105257-79-2Relevant articles and documents
ELECTROPHILIC SUBSTITUTION IN N-ARYL-2-PYRAZOLINES. 4. AZO COUPLING REACTIONS
Orlov, V. D.,Aziz, M. A.,Mchedlov-Petrosyan, N. O.,Asoka, P. K. D.
, p. 1246 - 1250 (1985)
4-R-Phenyldiazonium chlorides enter into the azo coupling reaction with 2-pyrazoline derivatives at the para position of the N-aromatic nucleus.The reaction is very sensitive to steric and electronic effects of the substituting groups in the pyrazolines.The electronic spectra and acid-base properties of the substituted azopyrazolines are discussed.