Dv. Yashunsky et al., CHEMISTRY OF DIMETHYLAMINOMETHYLPORPHYRINS .2. PORPHYRIN DIMERS LINKED BY PYRROLYLMETHYLENE UNITS, Tetrahedron letters, 38(1), 1997, pp. 105-108
Reaction of various a-unsubstituted pyrrole derivatives with trimethyl
(porphyrinylmethyl)-ammonium iodides (generated in situ from the corre
sponding meso-dimethylaminomethylporphyrins and iodomethane) afforded
a number of symmetrical and unsymmetrical porphyrinylmethylpyrrole add
ucts, including dimers linked by one and two pyrrolylmethylene units.
The NMR spectra of the monopyrrole-linked dimers indicate a preference
for a face-to-face conformation. Copyright (C) 1996 Elsevier Science
Ltd