oxygen; cobalt(II)salen in ethanol T=60°C; 24 h;

anhydrous iron chloride; di-tert-butyl peroxide in 1,2-dichloro-ethane T=80°C; 12 h; Schlenk technique;

oxygen; cobalt(II)salen in ethanol T=60°C; 24 h;

oxygen in anhydrous xylene T=140°C; 20 h;

1: 4-ClC6H4CH2NHPh With 2,3-dicyano-5,6-dichloro-p-benzoquinone in N,N-dimethyl-formamide T=20°C; 0.0833333 h; Inert atmosphere; 2: 2-Methyl quinoline in N,N-dimethyl-formamide T=70°C; 24 h; Inert atmosphere; diastereoselective reaction;