132668-77-0Relevant academic research and scientific papers
THERMAL DECOMPOSITION OF 1,2-DIMETHYL-3(5)-(4-R-STYRYL)PYRAZOLIUM IODIDES
Perevalov, V. P.,Andreeva, M. A.,Shmelev, L. V.,Stepanov, B. I.
, p. 1266 - 1269 (2007/10/02)
The reaction of 1,2,3,(5)-trimethylpyrazolium iodide with aromatic aldehydes yielded the series of 1,2-dimethyl-3(5)-(4-R-styryl)pyrazolium iodides (R = H, NMe2, NO2).The quantitative ratio of 1-methyl-3- and -5-(4-R-styryl)pyrazoles formed in the thermal decomposition of the above-mentioned pyrazolium iodides depends on steric factors in the initial compounds and on the electronic influence of the substituent R.A simple method was proposed for the production of trans,trans-1,4-bis(1-methyl-3-pyrazolylvinyl)benzene and 1-methyl-3,5-distyrylpyrazole, which possess fluorescent properties.
