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Regioselective Monoalkylation of Calixarenes. Synthesis of Homodimer Calixarenes
The Journal of Organic Chemistry, 2000The selective monoalkylation at the smaller (lower) rim of the p-tert-butylcalix[4]- and -[6]arenes using bis(butyltin)oxide and different alkylating agents is described. The procedure is remarkable for the mild conditions used allowing an efficiently access to monoalkylated calixarene derivatives in moderate to good yields.
, Santoyo-González +2 more
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Deprotonation of Calixarenes in Acetonitrile
The Journal of Organic Chemistry, 2005[Structure: see text]. The pKa values for calixarenes in MeCN have been determined by selective titration with bases using a spectroscopic method. These values are as follows: calix[4]arene pKa(1) = 19.06 +/- 0.22, pKa(2) > 33; calix[6]arene pKa(1) = 15.59 +/- 0.06, pKa(2) = 23.85 +/- 0.35, pKa(3) > 33; calix[8]arene pKa(1) = 17.20 +/- 0.20, pKa(2 ...
Cunningham, ID, Woolfall, M
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Chemical Communications, 2013
The synthesis in 1985 by the group led by Tony McKervey of numerous calix[4]arene derivatives capable of acting as neutral, multidentate ligands proved to be a seminal step in the development of various applications of calixarenes as metal-ion binding agents.
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The synthesis in 1985 by the group led by Tony McKervey of numerous calix[4]arene derivatives capable of acting as neutral, multidentate ligands proved to be a seminal step in the development of various applications of calixarenes as metal-ion binding agents.
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2016
This chapter deals with those members of the calix[n]arene family having a number n of aryl rings ranging from 7 to 20, which have been defined as the "large" calixarenes. In particular, their synthesis, chemical modification, and supramolecular properties are here reviewed. Notwithstanding their unfavorable common features (the lack of efficient large-
C. Talotta +5 more
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This chapter deals with those members of the calix[n]arene family having a number n of aryl rings ranging from 7 to 20, which have been defined as the "large" calixarenes. In particular, their synthesis, chemical modification, and supramolecular properties are here reviewed. Notwithstanding their unfavorable common features (the lack of efficient large-
C. Talotta +5 more
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Biopharmaceutical applications of calixarenes
Journal of Drug Delivery Science and Technology, 2004xxx
Dasilva, E., Lazar, An, Colemanaw, Xxxx
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Liquid Crystalline Calixarenes
Journal of Inclusion Phenomena and Molecular Recognition in Chemistry, 1994Bowl-shaped (bowlic) liquid crystals are reviewed and new bowlic materials containing rigid tungsten-oxo calix[4]arene based cores are discussed. Tungsten-oxo calix[4]arenes with 8 and 12 dodecyloxy sidechains have been investigated and exhibit bowlic columnar phases which are stable over approximately a 200° temperature range.
Timothy M. Swager, Bing Xu
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Catenation of Calixarene Annulus
Organic Letters, 2012Through-the-annulus-catenated calixarenes have been obtained, for the first time, by exploiting the "superweak anion" approach that allows the threading of the calix cavity with functionalized dialkylammonium axles. In addition, the first example of a stereoprogrammed synthesis of a catenane orientational isomer (an oriented calix[2]catenane) has been ...
GAETA, CARMINE +5 more
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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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1996
Abstract The term calix[n]arenes indicates a class of phenolic metacyclophanes derived from the condensation of phenols and aldehydes. The name was coined by Gutsche and derives from the Latin ‘calix’ because of the vase-like structure that these macrocycles assume when all the aromatic rings are oriented in the same direction.
Arturo Arduini, Alessandro Casnati
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Abstract The term calix[n]arenes indicates a class of phenolic metacyclophanes derived from the condensation of phenols and aldehydes. The name was coined by Gutsche and derives from the Latin ‘calix’ because of the vase-like structure that these macrocycles assume when all the aromatic rings are oriented in the same direction.
Arturo Arduini, Alessandro Casnati
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