manganese; nickel(II) bromide trihydrate in N,N-dimethyl-formamide T=20 - 60°C; 20 h; Inert atmosphere;

1: ethyl 4-bromobutanoate With nickel(II) bromide trihydrate; bathophenanthroline in N,N-dimethyl-formamide T=40°C; 0.333333 h; 2: 4-(tert-butyl)-2-chloropyridine With manganese in N,N-dimethyl-formamide T=40°C; Sealed tube;

trichlorophosphate RefluxInert atmosphere;

1: dihydrogen peroxide; acetic acid / water / 14 h / 120 °C 2: trichlorophosphate / 16 h / Reflux View Scheme

T=40°C; 20 h; Irradiation; Yield given. Yields of byproduct given. Title compound not separated from byproducts;