Jing Li, Mao Liu, Qi Li, Hua Tian and Yian Shi
Org. Biomol. Chem., 2014,12, 9769-9772
DOI:
10.1039/C4OB01549E,
Communication
This paper describes azidation of indoles with NaN3 and ceric ammonium nitrate (CAN), giving a variety of spirocyclic 2-azido indolines in good yields and moderate diastereoselectivities.