Alkali and alkaline-earth metal cation c
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Paula M. Marcos; JosΓ© R. Ascenso; Manuel A. P. Segurado; J. L. C. Pereira
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Article
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1999
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John Wiley and Sons
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English
β 93 KB
π 2 views
The tetraphenyl ketone of p-tert-butyldihomooxacalix[4]arene (2) was synthesized for the first time. This derivative possesses the cone conformation in solution at room temperature, which was confirmed by NMR measurements ( 1 H, 13 C and NOE 1D). Extraction studies with metal picrates from neutral a