magnesium; methyl iodide in tetrahydrofuran THF soln. of ArBr was added dropwise to Mg metal, reaction was initiated with MeI, stirred for 2 h at 25°C under Ar, a soln. of Me3GeCl in THF was added dropwise, mixt. was refluxed for 2 h; cooled, treated with 5percent aq. NH4Cl, extd. with CH2Cl2, ext. was washed with water, dried (Na2SO4), fractionated; elem. anal.;

tert.-butylnitrite; toluene-4-sulfonic acid in 1,2-dichloro-ethane T=0°C; Sandmeyer Reaction; 4 h; Inert atmosphere;

in tetrahydrofuran T=20°C; 3 h;

in diethyl ether

(i) AlCl3, (ii) /BRN= 3588450/; Multistep reaction;

byproducts: CH3SO2C6H4-p-F;

byproducts: C6H5SO2C6H4-p-F;

(i) AlCl3, (ii) /BRN= 3588450/; Multistep reaction;

lt;Rh(cod)(MeCN)2gt;BF4 in tetrahydrofuran T=60°C; 2 h;