Chemistry of pyrrolic compounds. XLVIII. The chemistry of porphyrins carrying sulfur-containing substituents at a meso-carbon

Abstract

The preparation of a meso-thioacetoxyporphyrin by ring synthesis from a dipyrrylthione is described together with the reaction of thiocyanogen with octaethylporphyrin and coproporphyrin 11 to give meso-thiocyanatoporphyrins. Attempts to produce meso-mercaptoporphyrins by hydrolysis of either meso-thioacetoxy- or meso-thiocyanato-porphyrins failed. Instead the corresponding disulfides were produced and the properties of this latter group are described.