in liquid sulphur dioxide T=-60°C; 24 h;

1: benzaldehyde; trimethyl orthoformate With bismuth trifluoromethanesulphonate in methanol 1.5 h; Heating; 2: trimethyl(methallyl)silane With bismuth trifluoromethanesulphonate in acetonitrile T=20°C; 0.166667 h;

2,2'-azo-bisisobutyronitrile; tri-n-butyl-tin hydride in benzene 5 h; Heating;

2,2'-azo-bisisobutyronitrile; tri-n-butyl-tin hydride in benzene Heating; Yield given. Yields of byproduct given. Title compound not separated from byproducts;

aluminium