We report the unexpected result of the reaction of 1,3-bis[(9-anthrylmethoxy)methyl]benzene (1a) or 1,3,5 -tris [(9-anthrylmethoxy)methyl]benzene (1b) with tris(2-maleimidoethyl)amine (2) in homogeneous solution leading to giant bis(bicyclic) and crypt-tris(bicyclic) molecules. The anticipated, intractable solids are obtained in a condensed state reaction using an oscillating mill.
Synthesis and characterization of new aromatic tweezers and complex formation with tropylium ion in 1,2-dichloroethane
spectroscopy were used to investigate the host–guest chemistry of the new ligands in complexation with tropylium tetrafluoroborate as a model aromatic cationic guest in 1,2-dichloroethane. The appearance of coloured charge-transfer absorption bands demonstrates the complex formation with a tropyliumion. The enlargement of aryl receptor size from phenyl and naphthyl to anthryl increases the stability of