Conjugates of boron clusters with derivatives of natural chlorin and bacteriochlorin

Conjugates of bacteriochlorin p and chlorin e6 with cobalt bis(dicarbollide) anion [3,3’-Co(1,2-C2B9H11)2]− were synthesized using different synthetic approaches. The boronated bacteriochlorin p was prepared by reaction of bacteriochlorin N-amino cycloimide with, bis(dicarbollide)-based carboxylic acid. The boronated chlorin e6 conjugates were obtained by both “click reaction” of containing alkyne group chlorine with azide derivative of cobaltacarborane and reaction of chorin-based amines with cyclic oxonium derivative of cobalt bis(dicarbollide).