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Synthesis and molecular structure of tetrahomodioxa p-phenylcalix[4] arene tetra ester derivative in 1,4-alternate conformation

Authors
No, KPark, YJChoi, EJ
Issue Date
20-Aug-1999
Publisher
KOREAN CHEMICAL SOC
Citation
BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.20, no.8, pp.905 - 909
Journal Title
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
Volume
20
Number
8
Start Page
905
End Page
909
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/16824
ISSN
0253-2964
Abstract
Reaction of tetrahomodioxa p-phenylcalix[4]arene with ethyl bromoacetate and potassium carbonate in acetone leads to the title tetra ester derivative, 7,13,21,27-tetra-phenyl-29,30, 31,32-tetrakis(ethoxycarbonyl)methoxy-2,3,16,17-tetrahomo-3,17-dioxacalix[4] arene, its structure was determined by NMR spectra as 1,4-alternate conformation. The molecular structure has been solved by X-ray diffraction methods. The molecule has: 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.
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