Asymmetrically protected porphyrin meso-tetraphenols and their applicationin the synthesis of pentaporphyrin dendrimers

Abstract

The readily available tetrakis(4-hydroxyphenyl)porphyrin core 1 was silylated to the trisprotected 2a and the tetraprotected 3a. These two molecules were used, respectively as monomers and core reagents in a synthesis of pentaporphyrin dendrimers 7a-c with benzyl ether branches or hexadecyl groups as the peripheral groups.