Solvatochromism of Heteroaromatic Compounds: XIV. 5-Amino-1-methyl-4-nitropyrazole and Its Analogs was written by Vokin, A. I.;Shulunova, A. M.;Krivoruchka, I. G.;Krylova, O. V.;Lopyrev, V. A.;Turchaninov, V. K.. And the article was included in Russian Journal of General Chemistry (Translation of Zhurnal Obshchei Khimii) in 2002.Application In Synthesis of 1-Methyl-4-nitroimidazole This article mentions the following:
The solvatochromism of H complexes of 5-amino-1-methyl-4-nitropyrazole and 2-nitroaniline derivatives in aprotic protophilic media was described on a quant. level with the aid of Kamlet-Taft empirical parameters. Specific solvation affects only one of the two long-wave bands, that corresponding to an electronic transition involving orbital electron d. transfer from the H-bound N atom. When such transfer does not occur, which is typical of the second transition, specific solvatochromic effect is either weak or absent. In the experiment, the researchers used many compounds, for example, 1-Methyl-4-nitroimidazole (cas: 3034-41-1Application In Synthesis of 1-Methyl-4-nitroimidazole).
1-Methyl-4-nitroimidazole (cas: 3034-41-1) belongs to imidazole derivatives. 1H-imidazole is an imidazole tautomer which has the migrating hydrogen at position 1. It is a conjugate base of an imidazolium cation. It is a conjugate acid of an imidazolide. It is a tautomer of a 4H-imidazole. This ring system is present in important biological building blocks, such as histidine and the related hormone histamine.Application In Synthesis of 1-Methyl-4-nitroimidazole
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem