Tetrahedron p. 3523 - 3534 (1980)
Update date:2022-09-26
Topics:
Bouchet, P.
Lazaro, R.
Benchidmi, M.
Elguero, J.
The preparation of different aminoindazoles by nucleophilic aromatic photosubstitution of nitroindazoles by amines is described.In this manner, the amino, methylamino, dimethylamino and diethylamino substituents are introduced in 3, 4, 5 or 7-position.The irradiation in the presence of ethanol gives ethoxyindazoles in only four cases.Two demethylation reactions have been observed: the first one concerns the formation of methylamino derivatives starting from dimethylamine; the second one, the formation of N(H)1-indazoles by irradiation in presence of diethylamine.
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Doi:10.1039/c39810000087
(1981)Doi:10.1016/S0040-4039(02)00925-5
(2002)Doi:10.1021/jo00332a035
(1981)Doi:10.1016/S0040-4020(01)92429-9
(1981)Doi:10.1021/ja00406a067
(1981)Doi:10.1002/jps.2600700608
(1981)
