alpha -Amino acid diamide and use thereof as cupric ion-transporting ionophore

摘要

A diamine derivative expressed by the following general formula (I): <IMAGE> (I) wherein R1 and R2 stand, independently from each other, for a hydrogen atom, an alkyl group, an aralkyl group or an aryl group. The diamide derivative is useful as an ionophore which can selectively transport cupric ions through liquid membranes.