11. The pyridine ligand replaced during the reaction is restored after its completion. 12. Pyridine is harmful if inhaled, swallowed or absorbed through the skin.13. Pyridine might also have minor genotoxic, and clastogenic effects.14. Like the related molecule pyridine and quinoline, acridine is mildly basic. 15. Typical examples of basic aromatic rings are pyridine or quinoline. 16. With pyridine as a base and solvent, refluxing conditions are required. 17. Examples include pyridine , phosphabenzene, arsabenzene, and pyrylium. 18. Bases such as pyridine can also be used to promote the reaction: 19. Copper hydride reversibly precipitates from pyridine solution, as an amorphous solid. 20. Pyridine itself is a relatively weak ligand in forming quantitative analysis of iron.
