Bromination of p-tert-butyl calix[n]arenes under different reaction conditions can provide either methylene bridge or ring substituted calix[n]arenes that are usually only amenable through long circuitous routes. (C) 2002 Elsevier Science Ltd. All rights reserved.
PROCESSES FOR THE PREPARATION OF CALIXARENE DERIVATIVES
申请人:Raston Colin L.
公开号:US20100185022A1
公开(公告)日:2010-07-22
A method for the preparation of calix[n]arene derivatives, in particular phosphonated calix[n]arenes. The present invention also relates to nano-structures of phosphonated calix[n]arenes.
<scp>Palladium‐Catalyzed</scp> Carbonylation of Multifunctionalized Substituted Alkynes to Quinolinone Derivatives under Mild Conditions<sup>†</sup>
作者:Aleksandr Voronov、Francesco Pancrazzi、Ana Maria Constantin、Raimondo Maggi、Raffaella Mancuso、Bartolo Gabriele、Diego Olivieri、Carla Carfagna、Alessandro Casnati、Francesco Rispoli、Laura Baldini、Nicola Della Ca
DOI:10.1002/cjoc.202300337
日期:2023.12
A highly selective palladium-catalyzedcarbonylation of 2-alkynylanilines bearing an amide moiety to condensed six-membered heterocyclic structures has been developed undermildconditions (room temperature and atmospheric pressure of CO). The carbonylative protocol is also compatible with CO surrogates, such as benzene-1,3,5-triyl triformate (TFBen) or the newly developed calix[6]arenes functionalized
在温和条件(室温和大气压 CO)下,开发了一种高选择性钯催化的带有酰胺部分的 2-炔基苯胺羰基化成稠合六元杂环结构的方法。羰基化方案还与 CO 替代物兼容,例如三甲酸苯-1,3,5-三酯 (TFBen) 或新开发的用六个甲酸酯基团功能化的杯[6]芳烃 (CLX[6]CO),它们都是能够原位释放CO 。一系列含有重要恶嗪基-喹啉酮支架的三环稠合杂环已被选择性地获得(仅观察到6 -endo-dig环化模式),产率良好至优异(高达99%)。
US8252954B2
申请人:——
公开号:US8252954B2
公开(公告)日:2012-08-28
One step facile synthesis of bromo calix[n]arenes
作者:Satish Kumar、H.M Chawla、R Varadarajan
DOI:10.1016/s0040-4039(02)01548-4
日期:2002.9
Bromination of p-tert-butyl calix[n]arenes under different reaction conditions can provide either methylene bridge or ring substituted calix[n]arenes that are usually only amenable through long circuitous routes. (C) 2002 Elsevier Science Ltd. All rights reserved.
Self-organised nano-arrays of p-phosphonic acid functionalised higher order calixarenes
作者:Thomas E. Clark、Mohamed Makha、Alexandre N. Sobolev、Dian Su、Henry Rohrs、Michael L. Gross、Jerry L. Atwood、Colin L. Raston
DOI:10.1039/b801256c
日期:——
Water-soluble p-phosphonic acid calix[n]arenes (n = 5, 6 or 8) have been synthesized in five steps in overall 68, 66, 67% yield, respectively, by the recently developed procedure for p-phosphonic acid calix[4]arene. The hydrogen bonding prowess of the phosphonic acids dominates their self assembly into nano-arrays in both solution and the gas phase. In DMSO, nano-arrays of p-phosphonic acid calix[6]arene are stable for over 24 h, with the solvent molecules slowly disrupting the hydrogen bonded network affording solvated monomeric units. In the gas phase, nano-arrays of around 20 calixarene units were observed for the p-phosphonic acid calix[n]arenes using MALDI-TOF-MS, and ESI-MS revealed the presence of heteroleptic nano-arrays for a 1 : 1 mixture of p-phosphonic acid calix[4,5]arenes.