113918-30-2Relevant academic research and scientific papers
PYRYLIUM DERIVATIVES OF N-ARYL-2-PYRAZOLINES
Orlov, V. D.,Vakula, V. N.,Gella, I. M.
, p. 1570 - 1575 (2007/10/02)
Dyes absorbing in the region of 564-640 nm were obtained by the reaction of derivatives of 2,6-diarylpyrylium perchlorates with 1,5-diphenyl-3-R-2-pyrazolines, which takes place at the para position of the N-phenyl.In reaction with ammonia and sodium sulfide the dyes give the corresponding pyridine and thiopyrylium derivatives of the pyrazolines.
