A simple and direct synthesis of 3-alkenyl indoles from 2-azido-3-arylacrylates and terminal alkenes in the presence of a catalytic amount of Pd(OAc)(2) were developed. The reactions were performed at room temperature using O-2 as the oxidant resulting in moderate to good yields. Crown Copyright (c) 2012 Published by Elsevier Ltd. All rights reserved.
Facile, efficient synthesis of polyfunctionalized 2-aminoimidazoles via vinyl azides and cyanamide
A simple and direct synthesis of 2-aminoimidazoles from vinyl azides and cyanamide was developed. An attractive feature of this protocol is that the desired products are generated in a highly efficient and eco-friendly manner without the use of a catalyst. A plausible mechanism has been proposed. (C) 2014 Elsevier Ltd. All rights reserved.