Jc. Chambron et al., MULTIPORPHYRIN [2]-ROTAXANES AND [3]-CATENATES VIA COPPER(I)-TEMPLATED SYNTHESIS, Bulletin de la Societe chimique de France, 132(3), 1995, pp. 340-347
Condensation of dipyrrylmethane units onto a copper(I) complex, in whi
ch a diphenylphenanthroline ligand bearing aldehyde functions is threa
ded into a phenanthroline-containing macrocycle, afforded a copper(I)-
complexed bisporphyrin-stoppered [2]-rotaxane or a bis-porphyrin-bridg
ed [3]-catenate, depending on whether a second, aromatic aldehyde was
added to the reaction mixture or not. The isolated yields were 18 and
5% respectively. In a separate experiment, a macrocyclic compound iden
tical to the central ring of the [3]-catenate (46-membered ring) has a
lso been synthesized in 28% yield.