Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Zhurnal Obshchei Khimii called 1,3- And 1,5-dimethylpyrazole-based syntheses. VI. Stilbene and 1,4-distyrylbenzene analogs containing 3-, 4-, and 5-pyrazolyl radicals, Author is Perevalov, V. P.; Karim, A. Kh.; Andreeva, M. A.; Rumyantseva, E. G.; Stepanov, B. I., which mentions a compound: 84547-64-8, SMILESS is CN1N=C(CCl)C=C1, Molecular C5H7ClN2, Recommanded Product: 3-(Chloromethyl)-1-methyl-1H-pyrazole.
Condensation of 4-O2NC6H4CH2CO2H with pyrazolecarboxaldehydes, followed by reduction with SnCl2, gave I (R, R1 = H, H; Me, H; H, Me). Appropriate Wittig reactions gave II (R = 1-methyl-3-pyrazolyl, 4,5-dichloro-1-methyl-3-pyrazolyl, 1-methyl-5-pyrazolyl, 4-chloro-1-methyl-5-pyrazolyl), which showed intensive blue fluorescence in PhMe solution
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Reference:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics