iodine in tetrachloromethane (N2); monitored by (1)H NMR;

bromine in dichloromethane (N2); monitored by (1)H NMR;

acetic acid in acetic acid Kinetics; (N2); monitored by (1)H NMR;

in tetrachloromethane (N2); monitored by (1)H NMR;

magnesium in diethyl ether (N2); a mixture of (CH3)3SnCH2I and Mg in ether refluxed for 1 h; a soln. of (CH3)3GeBr added dropwise over a period of 45 min; refluxed for 1 h and stirred overnight; treated with saturated NH4Cl; distd.;

in tetrahydrofuran