ELECTROPHILIC SUBSTITUTION IN N-ARYL-2-PYRAZOLINES. 3. INTRODUCTION OF NITRO-, SULFO-, AND ACYL GROUPS. REACTION WITH MICHLER'S KETONE
1-Phenyl-3,5-diaryl-2-pyrazolines are nitrated, sulfurated, and acylated in the para-position of the 1-phenyl ring.In the presence of POCl3, pyrazolines form triphenylmethane dyes with a Michler's ketone.
Orlov, V. D.,Aziz, M. A.,Savran, A. T.,Asoka, P. K.
p. 787 - 790
(2007/10/02)
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