Joydev K. Laha, K. Tummalapalli, Ankur K Gupta
Aug 14, 2014
Citations
0
Influential Citations
34
Citations
Journal
Organic letters
Abstract
A novel tandem oxidative conversion of 10,11-dihydro-5H-dibenzo[b,e][1,4]diazepines to phenazines has been achieved under transition-metal-free, mild conditions using K2S2O8 or DDQ as the oxidizing agent. The transformation proceeds through oxidative removal of a benzylic methylene group by C-C and C-N bond cleavage followed by a new aryl C-N bond formation under radical conditions.