in N,N,N',N',N'',N''-hexamethylphosphoric triamide; diethyl ether byproducts: C6H6; at -30°C for 5 min in HMPA/ ether;

in tetrahydrofuran LiSnMe3 added to PhSnPr3 in THF, stirred at 50°C for 30 min, hydrolysis with water; org. layer extd. with ether, dried over Na2SO4; products determined by GLC;