Two-step redox systems. XV. Vinylogous bibenzimidazoles, bibenzoxazoles, and bibenzothiazoles and their aza derivatives was written by Huenig, Siegfried;Scheutzow, Dieter;Schlaf, Helmut;Schott, Albrecht. And the article was included in Justus Liebigs Annalen der Chemie in 1974.Recommanded Product: 3012-80-4 This article mentions the following:
The bibenzimidazoles and bibenzothiazoles I [Z = (CH:CH)n, n = 1-3, X = NMe or S, A- = e.g. BF4-] were prepared by two-fold ring closure of 2-HXC6H4NHMe with R1CO(CH:CH)nCOR1 (R1 = Cl or Me2CHCH2OCO2). Similarly prepared were I [X = S, Z = CH2(CH:CH)nCH2, n = 0-2]. I (X = O, Z = CH2CH2) was obtained by quaternization of the base. I (X = NMe, O, or S; Z = CH:NN:CH) were prepared by reaction of the heterocyclic aldehydes or the corresponding nitrones with N2H4 followed by quaternization. Coupling the hydrazono compounds II with glyoxal gave the tetraaza analogs III. In the experiment, the researchers used many compounds, for example, 1-Methyl-1H-benzo[d]imidazole-2-carbaldehyde (cas: 3012-80-4Recommanded Product: 3012-80-4).
1-Methyl-1H-benzo[d]imidazole-2-carbaldehyde (cas: 3012-80-4) 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.Recommanded Product: 3012-80-4
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem