60059-51-0Relevant academic research and scientific papers
Gas-phase pyrolysis of benzimidazole derivatives: novel route to condensed heterocycles
Ibrahim, Maher R.,Al-Azemi, Talal F.,Al-Etabi, Alya,El-Dusouqui, Osman M.E.,Al-Awadi, Nouria A.
experimental part, p. 4243 - 4250 (2010/07/05)
Gas-phase pyrolysis of N-(1H-benzimidazol-2-yl)-N′-arylidenehydrazines 1a-e gave the corresponding arylnitriles 2a-e, 2-aminobenzimidazole 3, 2,4,5-triphenylimidazole 4, 1,3-diphenyl-8H-2,3a,8-triazacyclopenta[a]indene 5, and 5,11-diphenyl-6H,12H-dibenzimidazo[1,2-a];1',2'-d]pyrazine 6. The kinetics and analysis of the products of reaction are reported and used to elucidate the mechanism of the elimination process.
Condensation and Cyclization of 2-Hydrazinobenzimidazole, -benzoxazole, and -benzothiazole
Badr, M. Z. A.,Mahmoud, A. M.,Mahgoub, S. A.,Hozien, Z. A.
, p. 1339 - 1344 (2007/10/02)
2-Hydrazinobenzoxazole (1), -benzimidazole (2), and -benzothiazole (3) were condensed with ethyl chloroformate and/or diethyl oxalate to produce 1,2,4-triazolo- and 1,2,4-triazino-fused ketones of the title azoles respectively.Condensation of 1 and 2 with aromatic aldehydes and/or acetic anhydride produced, 3-aryl- and 3-methyl-substituted 1,2,4-triazolo-fused azoles respectively.The hydrazines 1 and 2 cyclized with acetylacetone to produce the corresponding 2-(1-pyrazolyl) derivatives. 2-Acetylthiazolobenzimidazole reacted with hydroxylamine and/or alkylamines, to produce the corresponding condensation products.Also, it condensed with aromatic aldehydes to give the chalcones.When reacted with benzenediazonium salt, it gave the corresponding 2-arylazo-substituted compounds.
