H2O in chloroform-d1 water was added to mixt. (Ph3BiMe)(BF4) and 2,6-di-tert-butyl-4-methylpyridine in CDCl3 and mixt. was allowed to stand at room temp. for 33 h; detn. by NMR;
in tetrahydrofuran under inert atm. soln. NaBAr4 in THF was added dropwise at room temp. toBi(III) carboxylate in the same solvent and refluxed for 16 h; solvent was removed in vacuo, residue was extd. into hexane, filtered and subjected to column chromy. on silica (pentane-CH2Cl2 90:10);
copper(l) iodide; copper; calcium carbonate in neat (no solvent) treated in a ball mill for 16 h; extd. (benzene), filtered (Celite), evapd., elem. anal.;
