Synthesis of 2,9‐[14C]Dimethyl‐1, 10‐phenanthroline and the production of 67Cu

2,9-[14C]Dimethyl-1,10-phenanthroline was prepared by means of a nucleophilic methylation of 2-methyl-1,10-phenanthroline with [14c]methyllithium followed by oxidation. The specific activity of the synthesized and purified 2,9-[14C]dimethyl-1,10-phenanthroline was 1.78 mCi/mmol. The overall radiochemical yield was 59%. 67Cu was produced by α-bombardment of 64Ni.