title: Catenation of calixarene annulus.
abstract: Through-the-annulus-catenated calixarenes have been obtained, for the first time, by exploiting the "superweak anion" approach that allows the threading of the calix cavity with functionalized dialkylammonium axles. In addition, the first example of a stereoprogrammed synthesis of a catenane orientational isomer (an oriented calix[2]catenane) has been obtained, after macrocyclization, by using a directional alkylbenzylammonium axle.
authors.affiliation: Dipartimento di Chimica e Biologia and NANO_MATES Research Center, Università di Salerno, Via Ponte don Melillo, I-84084 Fisciano (Salerno), Italy. cgaeta@unisa.it
authors.forename: Carmine
authors.initials: C
authors.lastname: Gaeta
authors.forename: Carmen
authors.initials: C
authors.lastname: Talotta
authors.forename: Silvia
authors.initials: S
authors.lastname: Mirra
authors.forename: Luigi
authors.initials: L
authors.lastname: Margarucci
authors.forename: Agostino
authors.initials: A
authors.lastname: Casapullo
authors.forename: Placido
authors.initials: P
authors.lastname: Neri
mesh_terms: D047250:Calixarenes / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D015394:Molecular Structure; D043862:Rotaxanes / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D043862:Rotaxanes; D047250:Calixarenes