Green Synthesis: Aromatic Nitrations in Room-Temperature Ionic Liquids

摘要

As one of the least environmentally compatible synthetic methods, aromatic nitration has attracted a great deal of effort in terms of the design of more benign techniques. Room temperature ionic liquids (RTILs) afford a useful new method for aromatic nitration by using a simple nitrating agent (nitric acid) with a transition metal catalyst. Distillation of the nitration products affords a solvent/catalyst system that can be readily recycled for at least 4 reactions.