in tetrahydrofuran byproducts: NaCl; Addn. of (PhMeNCHCl)Cl to soln. of Mn-complex under N2 with stirring, color changes to green.; Filtn., evapn. of solvent, dissolving in toluene, column chromy. (SiO2, 5°C, toluene), evapn. of the second zone in vac., recrystn. (pentane, -78°C), elem. anal.;

oxalyl dichloride in chloroform Ambient temperature;

diethyl ether

triethylamine in chloroform 48 h;