American Chemical Society
Browse
ol702265h_si_003.pdf (193.75 kB)

Cobalt-Catalyzed Intramolecular C−H Amination with Arylsulfonyl Azides

Download (193.75 kB)
journal contribution
posted on 2007-11-08, 00:00 authored by Joshua V. Ruppel, Rajesh M. Kamble, X. Peter Zhang
Cobalt complexes of porphyrins are effective catalysts for intramolecular C−H amination with arylsulfonyl azides. The cobalt-catalyzed process can proceed efficiently under mild and neutral conditions in low catalyst loading without the need of other reagents or additives, generating nitrogen gas as the only byproduct. The catalytic system can be applied to primary, secondary, and tertiary C−H bonds and is suitable for a broad range of arylsulfonyl azides, leading to high-yielding syntheses of various benzosultams.

History