A nickel catalyst coordinated by trimethylphosphine is found to effect the addition reaction of Ar-CN bonds in aromatic nitriles across alkynes to give rise to various beta-arylalkenenitriles.
A nickel catalyst coordinated by trimethylphosphine is found to effect the addition reaction of Ar-CN bonds in aromatic nitriles across alkynes to give rise to various beta-arylalkenenitriles.
Palladium-Catalyzed Three-Component Arylcyanation of Internal Alkynes with Aryl Bromides and K<sub>4</sub>[Fe(CN)<sub>6</sub>]
The one-pot, palladium-catalyzed, three-component coupling of aryl bromides, internal alkynes, and environmentally friendly K-4[Fe(CN)(6)] provides an efficient and direct method for the preparation of beta-arylalkenylnitriles.
A nickel catalyst prepared from Ni(cod)(2) and PMe3 is found to effect arylcyanation reaction of alkynes. namely cleavage of a C-CN bond of an aryl cyanide followed by addition of each fragment across an alkyne. A wide range of functional groups in aryl cyanides tolerated the catalysis, giving variously functionalized beta-arylalkenenitriles stereoselectively. (c) 2006 Elsevier Ltd. All rights reserved.