Aryltriazenes react with zinc perchlorate/zinc cyanide to produces arylnitr
iles and react with zinc iodide to produce aryliodides. The reaction mechan
ism involves aryl radicals that have been trapped by addition to propenenit
riles in a good preparative Meerwein arylation process. (C) 2001 Elsevier S
cience Ltd. All rights reserved.