The Synthesis of Porphyrins Doubly Linked to Quinones by Hydrocarbon Chains

The title compounds 1 (n = 5, 6) are model compounds for light-induced charge separation in photosynthesis. In their synthesis from pyrrole and benzene derivatives the porphyrin ring was closed only in the last step. The synthetic route should also enable the synthesis of analogues with even shorter bridging chains.