HCl in tetrahydrofuran byproducts: NaCl; under Ar; to the Ga-compd. (generated in situ from Ga(CH2CMe3)2Cl and Na/C10H8 in THF at -78°C) was added anhyd. HCl, soln. became colorless; volatile components removed (vacuum distn.), liq. subjected to a dynamic vacuum for 18 h, solid dissolved in pentane, insol. portion (NaCl) repeatedly washed;

1: HCl / tetrahydrofuran 2: Na/naphthalene / tetrahydrofuran View Scheme