New [4.4]cyclophanes: molecular parallelograms, triangles, rhombuses, pentagons, and supramolecular constructions.
The fair or good yield synthesis of new [(4.4)(n)]cyclophanes (n = 1-5), starting from 1,4-bis(2-hydroxymethyl-5,5-dimethyl-1,3-dioxan-2-yl)benzene and several diacid-dichlorides, based on monomer and oligomer formation reactions (from 1 + 1 to 5 + 5), is reported. The structure and the complex architectures of the lattices for these cyclophanes are revealed by the X-ray molecular structure for five compounds, NMR investigations, and mass spectrometry measurements. Intramolecular and intermolecular CH-pi, p-pi, and pi-pi interactions are observed, both in solid state and solution.
Bogdan
Niculina
N
Marie Curie Excellence Team, Dept. Chemie, LS AC, Technische Universität München, 4, Lichtenbergstrasse, 85747 Garching, Germany. niculina.bogdan@ch.tum.de
Condamine
Eric
E
Toupet
Loïc
L
Ramondenc
Yvan
Y
Bogdan
Elena
E
Grosu
Ion
I