A spheroidal bis-porphyrin (dual capped quadruply cofacial dimeric tetraphenylporphyrin, 1), designed to be employed as a ligand for a class of catalysts that mimic the combined enzyme activities of superoxide dismutase and catalase, has been synthesized in 9 steps. C- Alkylation of 2-(2′-lithio-5′-tert-butyldimethylsiloxy-methyl) phenyl-1, 3-dioxolane (D) with tetra-bromide 6, prepared from bicyclo [2.2. 2] oct-7-ene-2, 3, 5, 6-tetracarboxylic ...
