Results 171 to 180 of about 6,709 (215)
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Journal of Inclusion Phenomena and Molecular Recognition in Chemistry, 1994
Due to the nonplanarity of the basic 1 n -metacyclophane system, calixarenes and resorcarenes can be transformed into molecules with inherent chirality. Various attempts to achieve this goal are reviewed. Special emphasis is given to derivatives with C n -symmetry, including derivatives of spherand calixarenes and other calixarene-like macrocycles.
Volker Böhmer +2 more
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Due to the nonplanarity of the basic 1 n -metacyclophane system, calixarenes and resorcarenes can be transformed into molecules with inherent chirality. Various attempts to achieve this goal are reviewed. Special emphasis is given to derivatives with C n -symmetry, including derivatives of spherand calixarenes and other calixarene-like macrocycles.
Volker Böhmer +2 more
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Functionalization and Application of Calixarenes
1995Selectively functionalized calix[4]arenes are used to build effective receptors for cations, anions and neutral molecules or for a combination of a cation and an anion. This was done by combination with a terphenyl unit (cation receptor), a uranyl-containing salen moiety (for anionic and neutral guests) or by introduction of sulfonamide groups (anion ...
Verboom, W. +3 more
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Calixarenes. 24. Complexation by water-soluble calixarenes
The Journal of Organic Chemistry, 1990Synthese de deux calixarenes a partir du p-(dialkylamino)calixarene (n=4-8) (I) par un processus utilisant le p-quinonemethide impliquant le traitement d'un sel quaternaire de I avec 2 equivalents de diethyl malonate de sodium, suivi d'une hydrolyse et decarboxylation du polyester ...
Iftikhar Alam, C. David Gutsche
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CALIXARENES AS HOSTS FOR QUATS
2000Imperial College Press ...
DALLA CORT, Antonella, MANDOLINI, Luigi
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Study of Calixarenes, V. Friedel‐Crafts Reaction of Calixarenes
Chemische Berichte, 1994AbstractThe para‐acylation of calix[4]arene (2), calix[6]arene (3), and calix[8]arene (4) by Friedel‐Crafts reaction with a wide variety of acyl chlorides leads to 5–7 in moderate to good yields. Friedel‐Crafts reaction of 26,28‐dimethoxycalix[4]arene (8) gave products 9 selectively disubstituted in the para‐positions of phenol rings.
Zhi‐Tang Huang, Guo‐Qiang Wang
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Reactivity control by calixarenes
2010[No abstract available]
L Mandolini +2 more
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Calixarenes. 20. The interaction of calixarenes and amines
Journal of the American Chemical Society, 1987C. David Gutsche +2 more
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Chirality in calixarenes and calixarene assemblies
2000Myroslav Vysotsky +2 more
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Preparation of amidoxime modified calixarene fiber for highly efficient adsorption of uranium (VI)
Separation and Purification Technology, 2022Yinchun Fang
exaly