tetrabutylammomium bromide; (Ph3P)2Pd(Ph)(I) in N,N,N',N',N'',N''-hexamethylphosphoric triamide byproducts: (C4H9)3SnBr; under Ar, mixt. heated at 100-120°C for 19 h with stirring; addn. of ether, washed with water (3 portions), sepn. from etheral layer;

tetrabutylammomium bromide; (Ph3P)2Pd(Ph)(I) in N,N,N',N',N'',N''-hexamethylphosphoric triamide byproducts: (C4H9)3SnI; under Ar, mixt. heated at 110°C until C14H7ONHI disappeared (TLC); filtered, addn. of ether, washed with water (3 portions), org. layer dried over Na2SO4, evapd., washed with cold hexane and then hot hexane; elem. anal.;