Journal of the Chemical Society. Perkin transactions I p. 57 - 60 (1987)
Update date:2022-08-11
Topics:
Takeuchi, Hiroshi
Maeda,Munenori
Mitani, Michiharu
Koyama, Kikuhiko
Reactions of phenyl azide with aromatic compounds ( i. e. benzene, toluene, ethylbenzene, cumene, anisole, and bromobenzene ) in the presence of AlCl3 gave diarylamines, whwreas those of phenyl azides with an electron-donating group such as Me and OMe yield little of the corresponding diarylamines ( tarformation takes place ).The reaction of 4-nitrophenyl azide with benzene in the presence of AlCl3 gave 4-nitrophenyl(phenyl)amine and a C-substitution product, 2-amino-5-nitrobiphenyl.Decomposition of 2-azidophenyl(phenyl)methane and 2-azidobiphenyls in CH2Cl2 in the presence of AlCl3 underwent an N-cyclization to afford 9,10-dihydroacridine and carbazoles, respectively, in good yields.The kinetic data on the decomposition of aryl azides and a Hammet plot ( with p= -6.0 ) for the formation of diarylamines suggest that the products are formed by an aromatic N-substitution of arylnitrenium-AlCl3 complexes via azide-AlCl3 complexes.We further argue the character of arylnitrenium-AlCl3 complexes.
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