Reversible, Room-Temperature Ionic Liquids. Amidinium Carbamates Derived from Amidines and Aliphatic Primary Amines with Carbon Dioxide

Abstract

Reversible, room-temperature ionic liquids, amidinium carbamates, are made by addition of carbon dioxide to mixtures of an aliphatic amidine and an aliphatic primary amine. The systems can be cycled repeatedly by sequential exposure to CO2 and N2. An example of the utility of such systems is provided.