hydrogen cation in water byproducts: Co(2+); dissociation (25-100°C, pH 4-5);

pyridine; tert.-butylhydroperoxide in dichloromethane byproducts: N2, tert-butanol, H2O; (Ar); to Co-complex added CH2Cl2 and methylhydrazine and stirred until Co-complex dissolved; stirred for 10 min at room temp.; tert-butylhydroperoxide added; pyridine added; concentrated; chromy.; concentrated; hexane added; cooled at -15°C;