Iron and copper catalyzed reaction of benzylamine with carbon tetrachloride: facile formation of 2,4,5- triphenylimidazoline derivatives

摘要: Abstract Iron and copper salts catalyzed the reaction of benzylamine with CCl 4 to give a mixture 2,4,5-triphenylimidazole (1), 1-benzyl-2,4,5-triphenylimidazole (2), 2,4,5-triphenylimidazoline (3), 1-benzyl-2,4,5-triphenylimidazoline (4) in high yields. The imidazoline was obtained as main product. imidazole derivatives were also formed by iron-catalyzed benzylidenebenzylamine (8) or dibenzylamine (5) . slowly underwent debenzylation dehydrogenation aid iron catalyst 1 2. From these results, mechanism involving formation 5 8, subsequent oxidative dimerization 8 form 4, further conversion 1, 2, 3 is proposed.