Visible light induced azidation of aldehydic C-H with carbon tetrabromide and sodium azide

A convenient and highly efficient synthesis of acyl azides via visible light induced azidation of aldehydic C-H with carbon tetrabromide and sodium azide is reported. The approach is also, applicable to a one-pot synthesis of carbamoyl azides starting directly from aldehydes. Operational simplicity, good to excellent yields and utilization of visible light as an inexpensive and sustainable energy source are the salient features of the present protocol. (C) 2016 Elsevier Ltd. All rights reserved.