• Phosphine-free Heck reaction with aryldiazonium fluoroborates, catalyzed by Pd(OAc)2, affords symmetrically coupled trans-stilbenes, generally in good yields; the presence of various functionalities, e.g. iodo, nitro or methoxycarbonyl, is tolerated: J. Chem. Soc., Perkin 1, 275 (1998).