The chemistry of pyrrolic compounds. III. The free radical nature of the oxyporphyrins

Abstract

The preparation of a-meso-oxy-1,2,3,4,5,8-hexamethyl-6,7-bis-(2?- ethoxycarbonylethyl)porphin (Ib), a new member of the oxyporphyrin series, is described. The structure of molecules of this type, which have now been shown to exhibit radical character, is further discussed.