L. Bonomo et al., Porphodimethene-porphyrinogen relationship: the generation of unprecedented forms of porphyrinogen, CHEM COMMUN, (21), 1999, pp. 2227-2228
The electrophilic reactivity of the porphodimethene skeleton towards nucleo
philes led the establishment of a synthetic methodology to unprecedented fo
rms of porphyrinogen containing the vinylidene substituents as well as othe
r functionalities in the meso-positions.