LiCl; CO; dichloro{1,1'-bis(diphenylphosphino)ferrocene}palladium(II) in N,N-dimethyl-formamide the triflate and the stannane in DMF contg. the Pd catalyst and LiCl heated at 90°C under 1 atm CO for 7 h; cooled to room temp., dild. with ether, filtered, filtrate washed with water and satd. NaCl soln., dried, concd., chromd. (flash column, hexanes/EtOAc);