The chemistry of pyrrolic compounds. L. The synthesis of oxorhodoporphyrin dimethyl ester and some of its derivatives

Abstract

Oxorhodoporphyrin dimethyl ester, a porphyrin containing electronegative groups in opposite pyrrolic rings, has been synthesized by the oxidative cyclization of a bilene-b. Rhodoporphyrin and its 2-vinyl analogue, two important degradation products of chlorophyll a, and the phaeopor- phyrin derivative of bacteriochlorophyll have been prepared from oxorhodoporphyrin.