in diethyl ether byproducts: MgCl2; a mixt. of InCl3 and PhCH2MgCl in Et2O is stirred at room temp., heating for 2 h under reflux (under Ar); removing of solvent in vac., the residual is dissolved in toluene, filtn., removing of solvent in vac., crystn., elem. anal.;

in diethyl ether N2 atmosphere, dry and degassed solvent, addn. of 3 equiv. of Grignard reagent in the dark at room temperature dropwise to soln. of SnCl3 in Et2O with stirring, refluxing (2 h); removing solvent in vac., washing (pentane), extn. with benzene, removing solvent in vac., recrystn. from (Et2O); elem. anal.;