25,27-(6-Tosyl-3,9-dioxa-6-azaundecane-1,11-diyldioxy)-26,28-(3,6, 9-trioxaundecane-1,11-diyldioxy)calix[4]arene.
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.
Kim
J S
JS
Department of Chemistry, Konyang University, Nonsan 320-711, Korea.
Lee
W K
WK
Rim
J A
JA
Jensen
W P
WP
Lee
J H
JH
Kim
M J
MJ
Kim
J G
JG
Suh
I H
IH