Synthesis of an F-BODIPY [2]catenane using the chemistry of bis(dipyrrinato) metal complexes

Abstract

ML2 type complexes of an olefin terminated 5H-dipyrrin ligand can be subjected to twofold ring closing metathesis to give bis(dipyrrinato)copper(II) and bis(dipyrrinato) zinc(II) [2] catenates. Demetalation of the copper(II) [2] catenate with KCN/N2H4 center dot H2O gave the corresponding bis(dipyrrin) [2] catenand. The boron difluoride complex of this bis(dipyrrin) was obtained as the first fluorescent F-BODIPY [2] catenane.