magnesium in diethyl ether

1: 13.48 g / pyridine / CH2Cl2 / 1 h / 0 °C 2: 1.) Mg / 1.) ether, reflux, 10 min, 2.) ether, benzene, overnight View Scheme

1: 92 percent / thionyl chloride 2: 73 percent / pyridine / CH2Cl2 / 1.) 0 deg C, 2 h, 2.) r.t., overnight 3: 76 percent / benzene; diethyl ether / Ambient temperature; other arylalkyl halide View Scheme

in diethyl ether; benzene Ambient temperature;

magnesium 1.) ether, reflux, 10 min, 2.) ether, benzene, overnight; Yield given. Multistep reaction;