Current time in Korea 03:22 Oct 20 (Fri) Year 2017 KCS KCS Publications
KCS Publications
My Journal Log In Register
HOME > Search > Browsing(BKCS) > Archives

Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 23, Number 11
BKCSDE 23(11)
November 20, 2002 

 
Title
Conformations of Tetrahomodioxa-p-phenylcalix[4]arene Alkyl Ethers
Author
Kwanghyun No, Young Ja Park
Keywords
Triiodide ion-selective electrode, PVC membrane, Porphyrin-Mn(III), Potentiometry
Abstract
Reaction of tetrahomodioxa p-phenylcalix[4]arene with alkyl halide and NaH in DMF leads to the title tetra-alkylated derivatives, 7,13,21,27-tetra-phenyl-29,30,31,32-tetraalkyloxy-2,3,16,17-tetrahomo-3,17-dioxacalix [4]arenes, their preferred conformations were determined by NMR spectra as C-1,2-alternate. The molecular structure of allyl derivative has been solved by X-ray diffraction methods. The molecules have a conformation with pseudo center of symmetry. The benzene ring A is up, ring C is down, B and D rings are flat with respect to the plane of the macrocyclic ring.
Page
1629 - 1634
Full Text
PDF