Reactions of chiral 2,2'-biamino-1,1'-binaphthalene (R or S) with monosubst
ituted porphyrin 1a, 2b-c afforded novel chiral diporphyrins 3a-c and 4a-c
which possess different linkers between the binaphthalene and porphyrin rin
g. Their structures have been identified by MS, IR, UV-visible and H-1 NMR
spectra, and elemental analysis.