Synthesis of a Bisvinylogous Octaethylporphyrin

Abstract

Hans Fischer's octaethylporphyrin (OEP) is so far the best available and most investigated of all synthetic porphyrins. The bisvinylogue OEP 1 has now been synthesized in high yields in a few steps. Owing to its chemical stability, good accessibility, and hitherto most intense UV/VIS absorption for an organic dye, this is a system with wide-ranging perspectives.