Exchange Reaction using 1, 3-bis(1- adamantyl)imidazolium tetrafluoroborate and dilithium phthalocyanine

Abstract

The synthesis 1, 3-bis(1-adamantyl)imidazolium lithium phthalocyanine employed 1,3-bis(1- adamantyl)imidazolium tetrafluoroborate as a cationic salt is an exchange reaction with the free lithium ion in dilithium phthalocyanine. Earlier synthetic schemes gave yields of 55%. An improved synthetic sequence was developed that gave reproducible yields of 85%. Elemental and 1H NMR analysis were used to establish the purity of the product. The new procedure appears to be scalable.