1,10-phenanthroline; cobalt(II) dibromide; lithium tert-butylate in 1,4-dioxane T=120°C; 7 h; Inert atmosphere;

trichlorophosphate

1: pyridine 2: POCl3 View Scheme

1: pyridine 2: POCl3 View Scheme

1: potassium carbonate; copper(l) iodide; N-methyl-2-(methylamino)ethylamine / tetrahydrofuran / 18 h / 80 °C / |Inert atmosphere 2: copper(ll) bromide; tetrabutylammomium bromide; dipotassium peroxodisulfate; 3-pyridinecarboxylic acid ethyl ester / acetonitrile / 24 h / 20 °C / |Inert atmosphere View Scheme