Gas-phase pyrolysis of benzimidazole derivatives: novel route to condensed heterocycles
作者:Maher R. Ibrahim、Talal F. Al-Azemi、Alya Al-Etabi、Osman M.E. El-Dusouqui、Nouria A. Al-Awadi
DOI:10.1016/j.tet.2010.03.061
日期:2010.6
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. (C) 2010 Published by Elsevier Ltd.