[Ru(TPP)CO]-catalysed intramolecular benzylic C-H bond amination, affording phenanthridine and dihydrophenanthridine derivatives.
Shedding light on azides: [Ru(TPP)CO] (TPP=tetraphenyl porphyrin dianion), white light and O(2)  were found to be a suitable catalyst combination to perform the annulation of several biaryl azides. The high chemoselectivity of the process allows the synthesis of phenanthridines and dihydrophenanthridines in good yield and purity.
Dipartimento di Chimica, Università degli Studi di Milano and ISTM-CNR, Via Venezian 21, I-20133 Milano, Italy.
Daniela
D
Intrieri
Matteo
M
Mariani
Alessandro
A
Caselli
Fabio
F
Ragaini
Emma
E
Gallo
D000586:Amination; D001386:Azides / Q000737:chemistry*; D002384:Catalysis; D008665:Metalloporphyrins / Q000737:chemistry*; D015394:Molecular Structure; D010617:Phenanthridines / Q000138:chemical synthesis* / Q000737:chemistry; D012428:Ruthenium / Q000737:chemistry*
D001386:Azides; D008665:Metalloporphyrins; D010617:Phenanthridines; D012428:Ruthenium