81400-82-0Relevant articles and documents
ELECTROPHILIC SUBSTITUTION IN N-ARYL-2-PYRAZOLINES. 2. REACTIONS WITH ALDEHYDES
Orlov, V. D.,Aziz, M. A.
, p. 74 - 76 (2007/10/02)
Leuco compounds of the triphenylmethane series were obtained by the reaction of 1,3-diphenyl-, 3-methyl-1,5-diphenyl-, 1,3,5-triphenyl-, and 1,5-diphenyl-3-styryl-2-pyrazolines with aromatic and heterocyclic aldehydes.The center of electrophilic attack is the para position of the aromatic ring in the 1 position of the heteroring.