Deyaa I. AbuSalim

NMR spectra were recorded using a 400 or 500 MHz NMR spectrometer and were run at 302 K unless otherwise indicated. 1 H NMR values are reported as chemical shifts δ, relative integral, multiplicity (s, singlet; d, doublet; dd, doublet of doublets; t, triplet; q, quartet; m, multiplet; br, broad peak) and coupling constant ( J ).

Introduction Click to copy section linkSection link copied! Porphyrin analogues with carbocyclic rings in place of a pyrrolic subunit, generally known as carbaporphyrinoid systems, (1) are widely studied due to their unusual reactivity (2) and ability to generate stable organometallic derivatives. (3,4) These include true carbaporphyrins such as 1 and 2, tropiporphyrins 3, azuliporphyrins 4 and benziporphyrins 5 (Figure 1).

Introduction Click to copy section linkSection link copied! Porphyrins and their derivatives fulfill a plenitude of biological functions that range from electron transport and oxygen transportation to photosynthesis.