Conformations of tetrahomodioxa-p-phenylcalix[4]arene alkyl ethers
- Authors
- No, K; Park, YJ
- Issue Date
- Nov-2002
- Publisher
- KOREAN CHEMICAL SOC
- Keywords
- homooxacalix[4]arene; conformation; crystal structure
- Citation
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.23, no.11, pp 1629 - 1634
- Pages
- 6
- Journal Title
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY
- Volume
- 23
- Number
- 11
- Start Page
- 1629
- End Page
- 1634
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/16379
- ISSN
- 0253-2964
1229-5949
- 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.
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