CH3OH in methanol; dichloromethane byproducts: C6H5(CH2NMe2), SnMe3OMe; a soln. of Sn compd. in CH2Cl2 added to a soln. of Pt complex in CH2Cl2/MeOH, stirred for 1.5 h; concd. (vac.); not isolated, detected by NMR;

in dichloromethane HCl bubbled through a soln. of Pt complex for 5 min; evapd. (vac.), pentane added, solvent-removed;