title: The preparation of 1,10-phenanthroline from o-phenylenediamine.
mesh_terms: D010618:Phenanthrolines; D010655:Phenylenediamines
chemical_list: D010618:Phenanthrolines; D010655:Phenylenediamines; C034193:1,2-diaminobenzene; C025205:1,10-phenanthroline
keywords: PHENANTHROLINE/preparation