176098-91-2

Upstream product

• 106774-58-7 25,26,27-tris(benzoyloxy)-28-hydroxycalix[4]arene 

Downstream Products

• 1365530-42-2 5-(4'-aminomethylphenyl)-25,26,27,28-tetrahydroxy-11,17,23-trisulfonatocalix[4]arene 
• 1365530-38-6 5-phenyl-25,26,27,28-tetrahydroxy-11,17,23-trisulfonatocalix[4]arene 
• 1365530-39-7 5-(4'-cyanophenyl)-25,26,27,28-tetrahydroxy-11,17,23-trisulfonatocalix[4]arene 
• 1365530-40-0 5-(4'-carboxamidophenyl)-25,26,27,28-tetrahydroxy-11,17,23-trisulfonatocalix[4]arene 
• 1365530-41-1 5-(4'-carboxyphenyl)-25,26,27,28-tetrahydroxy-11,17,23-trisulfonatocalix[4]arene 
• 1445881-09-3 5-(2'-formylphenyl)-25,26,27,28-tetrahydroxy-11,17,23-trisulfonatocalix[4]arene 
• 1445881-08-2 5-(2'-chlorophenyl)-25,26,27,28-tetrahydroxy-11,17,23-trisulfonatocalix[4]arene 
• 1445881-07-1 5-(2'-methoxyphenyl)-25,26.27,28-tetrahydroxy-11,17,23-trisulfonatocalix[4]arene 
• 1445881-05-9 5-(2'-methylphenyl)-25,26,27,28-tetrahydroxy-11,17,23-trisulfonatocalix[4]arene 
• 1191041-25-4 5-bromo-28-octyloxy-25,26,27-tri(benzoyloxy)calix[4]arene 

Relevant academic research and scientific papers

Synthesis of new trisulfonated calix[4]arenes functionalized at the upper rim, and their complexation with the trimethyllysine epigenetic mark

A synthetic route to produce a new family of trisulfonated calix[4]arenes bearing a single group, selectively introduced, that lines the binding pocket is reported. Ten examples, including new sulfonamide and biphenyl-substituted hosts, each with additional binding elements, demonstrate the tuning of guest affinities and selectivities. NMR titrations in phosphate-buffered water show that one of the new hosts binds to the modified amino acid trimethyllysine with the highest affinity and selectivity observed to date.

Synthesis and ESR behaviors of nitroxide monoradical based on calix[4]arene

A novel paramagnetic calix[4]arene 6 with an N-O monoradical on the upper rim was synthesized and studied by ESR spectroscopy. Its ESR behaviors were mainly induced by its intrinsic conformational flexibility. The effects of varying temperature and comple

Mono-ionizable calix[4]arene-benzocrown-6 ligands in 1,3-alternate conformations: synthesis, structure and silver(I) extraction

Two series of novel mono-ionizable calix[4]arene-benzocrown-6 ligands in 1,3-alternate conformations are synthesized. In one series, the proton-ionizable group (PIG) is attached to the para position of one aromatic ring in the calixarene framework, thereby positioning it over the polyether ring cavity. In the other series, the PIG is a substituent on the benzo group in the polyether ring. This orients the PIG away from the crown ether cavity. In addition to carboxylic acid functions, the PIGs include N-(X)sulfonyl carboxamide groups. With X group variation from methyl to phenyl to 4-nitrophenyl to trifluoromethyl, the acidity of the PIG is 'tuned'. Solvent extraction of Ag+ from aqueous solutions into chloroform is used to probe the influence of structural variation within the mono-ionizable calixcrown ligand on metal ion extraction efficiency, including the identity and acidity of the PIG and its orientation with respect to the polyether ring.

Upper-rim urea-derivatized calix[4]arenes as neutral receptors for monocarboxylate anions

Several new anion receptors have been synthesized by introducing one or two urea or thiourea units at the upper rim of calix[4]arenes, blocked in the cone conformation. The difunctionalized receptor 13 shows selectivity n the recognition of acetate anion, which interacts with the two urea units through four hydrogen bonds The monofunctionalized receptors 21 and 22 complex more strongly aromatic carboxylates or butyrate anion since the primary hydrogen bonding contacts are strengthened by weak π/π or CH3/π host-guest interactions.