We have discovered an efficient cyanation of aryl chlorides which employs P
d-2(dba)(3), dppf and Zn as the catalyst and Zn(CN)(2) as the cyanide sourc
e. Both electron-deficient and electron-rich aryl chlorides are effectively
cyanated under these conditions. This discovery represents the first succe
ssful palladium-catalyzed cyanation of both electron-deficient and electron
-rich aryl chlorides. (C) 2000 DuPont Pharmaceuticals Company. Published by
Elsevier Science Ltd. All rights reserved.