title: 25,27-(6-Tosyl-3,9-dioxa-6-azaundecane-1,11-diyldioxy)-26,28-(3,6, 9-trioxaundecane-1,11-diyldioxy)calix[4]arene.
abstract: A new calix[4]-crowned azacrown ether, C(51)H(59)NO(11)S, consisting of four phenyl rings in a 1,3-alternate conformation was synthesized from the reaction of 25, 27-bis(5-chloro-3-oxapentyloxy)calix[4]crown-5 and p-toluenesulfonamide in the presence of Cs(2)CO(3). A crown-5 loop was attached on the two facing lower rims of the calix[4]arene and the N-tosyl azacrown group was attached on the other set of lower rims of the calix[4]arene backbone. This molecule seems to offer an inside cavity for the formation of a host-guest complex.
authors.affiliation: Department of Chemistry, Konyang University, Nonsan 320-711, Korea.
authors.forename: J S
authors.initials: JS
authors.lastname: Kim
authors.forename: W K
authors.initials: WK
authors.lastname: Lee
authors.forename: J A
authors.initials: JA
authors.lastname: Rim
authors.forename: W P
authors.initials: WP
authors.lastname: Jensen
authors.forename: J H
authors.initials: JH
authors.lastname: Lee
authors.forename: M J
authors.initials: MJ
authors.lastname: Kim
authors.forename: J G
authors.initials: JG
authors.lastname: Kim
authors.forename: I H
authors.initials: IH
authors.lastname: Suh