ammonium cerium(IV) nitrate; dilithium tetrachloropalladate T=25°C; 24 h;

1: tri(.alpha.-naphthyl)antimony(III) With boron trichloride in dichloromethane T=0°C; 2 h; 2: With methanol T=20°C; 0.5 h; 3: 3-hydroxy-2,2-dimethylpropanol in methanol T=20°C; 1 h;

in dichloromethane all reactions under Ar atm.; soln. of BCl3 in CH2Cl2 added to stirred soln. of triarylstibane at 0°C, stirred for 2 h, allowed to warm toroom temp., solvent removed in vac., oil dissolved in MeOH, stirred for 30 min at room temp., diol added; stirred for 1 h, solvent removed in vac., chromy. (silica-gel, hexane/CH2Cl2);