The Oxyanions of Calix[4]arene : The NMR Investigation of the Structure of the Oxyanions of Calix[4]arene

Bulletin of the Korean Chemical Society

Volumn 18, Issue 6, 1997, Pages 636-640

  Nam, Kye Chun ^a   Kim, Dae Soon ^a   Kim, Jong Min ^a  

^a Chonnam National University   (South Korea)

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[No Author keywords available]

Indexed keywords

EID: 0011467827     PISSN: 02532964     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (20)

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2. Shinkai, S. Tetrahedron 1993, 49, 8933.
3. Gutsche, C. D. Topics in Current Chemistry 1984, 123, 3.
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13. 3. This suggests that the third proton from calix[4]arene might be lost as easy as the second one. That would explain why we could not detect the dianion species, but the mixture of mono and trianions.
14. A multiplets at 3.4 ppm was attributed from n-butyllithium, which was confirmed by the separate experiment.
15. Commercially available 35% oil dispersed KH used, but due to the homogeneity problem, it was not possible to weigh the exact amount of KH.
16. Ninagawa, A.; Matsuda, H. Macromol. Chem. Rapid Comm. 1982, 3, 65.
17. (a) Shannon, R.; Prewitt, C. T. Acta Crystallogr. 1969, B25, 925.
18. (b) Shannon, R. D. ibid. 1976, A32, 751.
19. Gutsche, C. D.; Lin, L. G. Tetrahedron 1985, 1633.
20. Gutsche, C. D.; Nam, K. C. J. Am. Chem. Soc. 1988, 110, 6153.