Particular calixarenes method for production and use thereof

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters

Reexamination Certificate

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C210S660000, C210S662000

Reexamination Certificate

active

07393969

ABSTRACT:
The present invention relates to calix[4]arenes which effectively bind alkali metal ions (Na+, K+) and transport them over phase boundaries, their preparation and use.

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Arnaud-Neu, F. et al.; “Selective alkali-metal cation complexation by chemically modified calixarenes. Part 4. Effect of substituent variation on the Na+/K+ selectivity in the ester series and X-ray crystal structure of the trifluoroethyl ester”; J. Chem. Soc. Perkin Trans. 2, vol. 7 (1992) pp. 1119-1125 XP009060397.
Groenen L.C. et al.: “Syn-1,2-Dialkylated calix‘4’arenes: General intermediates in the NaH/DMF tetraalkylation of calix‘4’arenes” Tetrahedron Letters, vol. 32, No. 23 (1991) pp. 2675-2678 XP002364287.
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Iwamoto, K. et al.; “Conformations and structures of tetra-O-alky-p-tert-butylcalix‘4’arenes. How is the conformation of calix‘4’arenes immobilized?” J. Org. Chem., vol. 56 (1991) pp. 4955-4962 XP002364289.
Inokuchi, F. et al.; “Selektive Erkennung Von Alkalimetall-Kationen durch pi-basische, molekulare Hohlraume und einfacher massenspektrometrischer Nachweis von Kation-Aren-Komplexen”; Angew. Chem., vol. 107, No. 12 (1995) pp. 1459-1462 XP009060511.

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