Tetrahedron p. 8649 - 8654 (1995)
Update date:2022-08-17
Topics:
Burgos
Delgado
Garcia-Navio
Izquierdo
Alvarez-Builla
The regioselective halogenation of pyridinium-N-(2'-pyridyl)aminide 1 with N-chloro, bromo or iodosuccinimide under mild conditions is described. The method, combined with a reduction of the N-N bond, allows an easy preparation of 5-halo and 3,5-dihalo-2-aminopyridines 4.
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