in tetrahydrofuran byproducts: {Ph4P}(1+), Ph3PO; suspending ((Ph3P)3PdCl)BF4 in THF under Ar within a thick-walled Pyrex tube, sealing the tube (vac.), heating the tube in an oil bath (125°C, 5 d) yielding a deep red soln. with a yellow ppt., cooling (room temp.), opening the tube under N2; filtration, cooling the filtrate in a freezer (overnight), crystn.; detn. of compds. by 31P-NMR;

KF; 18-crown-6 in tetrahydrofuran byproducts: Ph3PO, Ph3PF2; suspending ((Ph3P)3PdCl)BF4 and KF in THF under Ar, addn. of a soln. of 18-crown-6 in THF, stirring (1 h) yielding a yellow soln., heating (60°C, 15 min); not separated and isolated; detn. by 31P-NMR;