Results 81 to 90 of about 10,543 (208)

Cation Complexation by Calixarenes

, 2013
The present survey summarizes some of the most relevant properties of calixarenes as cation ligands that strongly contributed to the success of this class of synthetic receptors in supramolecular chemistry.
SANSONE, Francesco, BALDINI, Laura, CASNATI, Alessandro, A. Casnati, L. Baldini, F. Sansone   +5 more
core   +1 more source

Synthesis of N-phtaloyl amino acid p-tert-butylcalix[4]arene esters

Journal of the Brazilian Chemical Society, 2001
1-3-Diesters of p-tert-butylcalix[4]arene were obtained upon reaction with N-phtaloyl amino acid chlorides. Reactions with chiral amino acids were accompanied by complete or partial racemization in the reaction media (Et3N/CH2Cl2).
Lazzarotto Márcio, Nachtigall Francine Furtado, Nome Faruk   +2 more
doaj  

Conjugates of calixarenes emerging as molecular entities of nanoscience

, 2012
Calixarenes, along with cyclodextrins (viz. β-CD) and crown ethers, are the most commonly studied macrocyclic compounds. These bucket shaped molecules have gained tremendous importance for having both hydrophilic and hydrophobic compartments together in ...
Rao, Chebrolu Pulla, Acharya, Amitabha, Samanta, Kushal   +2 more
core   +1 more source

Efficient Synthesis of Water-Soluble Calixarenes Using Click Chemistry

, 2016
Several water-soluble calix[4]arenes were synthesized via Huisgen 1,3-dipolar cycloaddition between azides and alkynes. Cationic, anionic, and nonionic calixarenes were prepared from a common azidocalixarene intermediate.
Eui-Hyun Ryu (2464642), Yan Zhao (58882)
core   +1 more source

Bimetallic lanthanide supramolecular edifices with calixarenes

LCS
Ihringer, Frederic, Besancon, Frederic, Bunzli, Jean-Claude G.   +2 more
core   +1 more source

Naphthalene-Based Calixarenes:  Unusual Regiochemistry of a Friedel−Crafts Alkylation

, 2016
In the pursuit of naphthalene-based calixarenes, a Friedel−Crafts alkylation with unusual regiochemistry was observed. Treatment of carbinol 14 with catalytic triflic acid was expected to produce calixarenes of the class represented by 16.
Timothy E. Glass (536972), Berkeley J. Shorthill (2121649)   +1 more
core   +1 more source

Adamantylated Calix[4]arenes Bearing CuAAC-Ready 2-Azidoethyl or Propargyl Functionalities

Molbank
1,3-Alternate calix[4]arenes were prepared, having bulky adamantyl groups in the p-positions of all four aromatic units of the macrocycles and pairs of propargyl or 2-azidoethyl groups alternating with n-propyl groups at the phenol oxygen atoms. The step-
Alexander Gorbunov, Maria Malakhova, Stanislav Bezzubov, Ivan Lentin, Vladimir Kovalev, Ivan Vatsouro   +5 more
doaj   +1 more source

Supramolecular Catalysis by Calixarenes

, 2017
Calixarenes, oligomeric cyclophanes derived from the condensation of phenols with formaldehyde,1,2 have been playing a prominent role in supramolecular catalysis.
L Mandolini, L. Mandolini, R. Salvio, R. Cacciapaglia, R Cacciapaglia, R Salvio   +5 more
core   +1 more source

The Preparation and Crystal Structures of Octaoxoketocalix[8]arene Derivatives: The Ketocalixarene Counterparts of the Largest “Major” Calixarene

Molecules
The purpose of this study was to synthesize and structurally characterize ketocalixarenes (i.e., calixarenes where the bridging methylene bridges are replaced by carbonyl groups) derived from the largest “major” calixarene, namely p-tert-butylcalix[8 ...
Katerina Kogan, Suheir Omar, Benny Bogoslavsky, Silvio E. Biali   +3 more
doaj   +1 more source

Supramolecular architecture-controlled self-assemblies of calixarenes [PDF]

, 2011
The controlled self-assembly of macrocyclic molecules based on calixarenes in functional supramolecular entities is an interesting topic of research in the area of supramolecular chemistry and nanotechnology.
Yushkova E., Stoikov I., Antipin I., Konovalov A.   +3 more
core