Effect of copper(I) on the conformation of the thiacalixarene platform in azide-alkyne cycloaddition
作者:V. A. Burilov、R. R. Ibragimova、R. I. Nugmanov、R. R. Sitdikov、D. R. Islamov、O. N. Kataeva、S. E. Solov’eva、I. S. Antipin
DOI:10.1007/s11172-015-1126-9
日期:2015.9
New lower-rim tetrasubstituted p-tert-butylthiacalix[4]arene derivatives bearing alkyl, propargyl, or triazole-containing substituents were synthesized. The structures of these compounds were determined by 1D and 2D NMR spectroscopy in solution and by X-ray diffraction in the solid phase. The copper-catalyzed azide-alkyne cycloaddition (CuAAC) of azides to a mixture of 1,3-alternate–partial cone stereoisomers of dipropargyl derivatives of thiacalix[4]arene affords triazole-containing products exclusively in the 1,3-alternate conformation.
合成了含有烷基、丙基或三唑取代基的新的低环四取代对叔丁基硫杂[4]炔衍生物。通过溶液中的一维和二维核磁共振光谱以及固相 X 射线衍射,确定了这些化合物的结构。在铜催化下,叠氮化物与硫杂[4]炔的二丙炔基衍生物的 1,3-互变-半锥立体异构体混合物进行叠氮-炔环加成(CuAAC),得到的含三唑产物完全是 1,3-互变构象。
Gallic acid-based dendrimers with a thiacalix[4]arene core: synthesis, aggregation and use for stabilization of Pd nanoparticles
作者:Aigul M. Fatykhova、Elza D. Sultanova、Vladimir A. Burilov、Bulat Kh. Gafiatullin、Angelina A. Fedoseeva、Tatyana A. Veshta、Marat A. Ziganshin、Sufia A. Ziganshina、Vladimir G. Evtugyn、Daut R. Islamov、Konstantin S. Usachev、Svetlana E. Solovieva、Igor S. Antipin
DOI:10.1039/d3nj03403h
日期:——
hydroxyl groups was developed. Dendrimers formed submicron aggregates in water containing 5% THF. The solubilizing ability of dendrimers with respect to the hydrophobic dye orange OT was established. Alkyl-containing amphiphilic dendrimers had a higher solubilization compared with their symmetric counterparts. Use of dendrimers in the stabilization of palladiumnanoparticles obtained by chemical reduction
An expedient route to p-tert-butylthiacalix[4]arene 1,3-diethers via Mitsunobu reactions
作者:István Bitter、Viktor Csokai
DOI:10.1016/s0040-4039(03)00285-5
日期:2003.3
Regioselective distal dialkylation of p-tert-butylthiacalix[4]arene with alcohols was performed under the Mitsunobu protocol using the DEAD/TPP system. The method provides a versatile tool for obtaining 1,3-diethers with different functional groups in the alkyl chains. (C) 2003 Elsevier Science Ltd. All rights reserved.