The heteroatom-containing porphyrin analogues or core-modified porphyrins that resulted
from the replacement of one or two pyrrole rings with other five-membered heterocycles …

Woodward and his colleagues1, 2 were the first to report the probable existence of an
expanded porphyrin, a pentapyrrolic sapphyrin (1), and but for the beautiful blue crystals that …

The replacement of one or more pyrrolic building block (s) of a porphyrin by a nonpyrrolic
heterocycle leads to the formation of so-called pyrrole-modified porphyrins (PMPs) …

The world of modified porphyrins changed forever when an N-confused porphyrin (NCP), a
porphyrin isomer, was first published in 1994. The replacement of one inner nitrogen with a …

The synthesis of meso-substituted porphyrins has traditionally been achieved under rather
forcing conditions (Figure 1). In the Rothemund method (ca. 1941) an aldehyde and pyrrole …

Despite the large-scale commercial application of heterogeneous catalytic
hydrodesulfurization (HDS) to the desulfurization of organosulfur compounds in pe-troleum …

An alteration of a metalloporphyrin coordination core, exemplified by 21-heteroporphyrins
and 2-aza-21-carbaporphyrin (N-confused porphyrin, inverted porphyrin), provides a route …

Core alteration, affording heteroporphyrinoids and carbaporphyrinoids, allows for the
exploration of porphyrin-like or porphyrin-unlike coordination chemistry. Such a strategy has …

Adapting the coordination environment to influence the electronic configuration of active
sites represents an efficient approach for improving the photocatalytic performance of the …

Monoheteroatom substituted porphyrins and diheteroatom substituted porhyrins resulting
from the replacement of one and two nitrogen atoms, respectively, are very stable aromatic …