50-97-5Relevant articles and documents
NOVEL ONE-POT HOMOGENEOUS PROCESS FOR THE LARGE SCALE MANUFACTURE OF 2-SUBSTITUTED BENZIMIDAZOLES
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Paragraph 0147; 0148, (2019/05/24)
2-substituted benzimidazoles and methods of preparing the same are disclosed. The compositions may include a compound or salt thereof, an acid, and a polar aprotic solvent. The compositions may be used to inhibit corrosion of a metal surface in contact with an aqueous system, and provide enhanced protection against corrosion of metals in the aqueous system.
BENZAZOLE DERIVATIVES AS HISTAMINE H4 RECEPTOR LIGANDS
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Page/Page column 63, (2012/04/17)
The present patent application concerns new Iigands of the H4-receptor of formula (I), their process of preparation and their therapeutic use.
The synthesis, characterization and optical properties of novel pyrido[1,2-a]benzimidazole derivatives
Ge, Yan Qing,Jia, Jiong,Yang, He,Tao, Xu Tang,Wang, Jian Wu
scheme or table, p. 344 - 349 (2011/06/11)
A series of novel, substituted, pyrido[1,2-a]benzimidazole derivatives were synthesized using a novel tandem annulation reaction between 2-acylbenzimidazole derivatives and 4-bromobut-2-enoic esters under mild conditions. The compounds were characterized using IR, 1H NMR, 13C NMR and HRMS; the crystal structure of 2,7,8-trimethyl-3- ethoxycarbonyl-4-phenylpyrido[1,2-a]benzimidazole was determined as orthorhombic. The absorbance and fluorescence spectra of the pyrido[1,2-a]benzimidazoles were measured in dichloromethane; an intense absorption maxima was observed at 250 nm and emission maxima were noted at 460 nm. The absorption spectra and fluorescence characteristics of the pyrido[1,2-a]benzimidazole derivatives revealed that a phenyl and a methyl group attached to the pyrido[1,2-a]benzimidazole ring markedly influenced maximum emission.
