[EN] TROGER'S BASE-BASED MONOMERS, AND POLYMERS, METHODS OF MAKING AND USES THEREOF [FR] MONOMÈRES À BASE D'UNE BASE DE TRÖGER, ET POLYMÈRES, PROCÉDÉS DE PRODUCTION ET UTILISATIONS DE CEUX-CI
聚醚醚酮由于其高的热稳定性和化学稳定性以及在各种应用中的高性能而受到越来越多的关注。然而,它具有半结晶形态,低的自由体积分数和差的可加工性,需要使用苛刻的酸性溶剂,这导致不希望的磺化。在这项工作中,开发了三种固有的微孔聚醚醚酮(iPEEK),它们结合了螺双茚满,Tröger的碱和三萜烯扭曲的结构,用于有机溶剂纳米过滤。分子动力学模拟有助于聚合物的分子工程,并有助于通过溶剂和聚合物之间的结合能来改善膜的性能。具有固有微孔性的聚合物设计原理的应用导致了范式的转变,聚合物的性能以及随后制造的纳滤膜的性能均得到了显着提高。iPEEK具有出色的溶液加工性能,高表面积205-250 m2 g -1,并且热稳定性优异。由i-PEEK浓度为19-35 wt%的N-甲基-2-吡咯烷酮浓液制备机械柔性的纳滤膜。膜的分子量截止值在450–845 g mol -1的范围内进行了微调,显示出的渗透率(3.57–11
Optically active and photoswitchable Tröger's base analogs
作者:Masoud Kazem-Rostami
DOI:10.1039/c9nj01372e
日期:——
enantiomer separation of a chiral Tröger's base analog and its use, as an opticallyactivebuildingblock, in the construction of molecular superstructures are presented. Various strategies are illustrated here for the attachment of azo photoswitches to the Tröger's base scaffold without racemizing its stereogeniccenters. The resulting opticallyactive photoswitches introduced chirality, thermochromic, and
Synthesis and reactivity of dimethoxy-functionalised Tröger’s base analogues
作者:Qasim M. Malik、Sadia Ijaz、Donald C. Craig、Andrew C. Try
DOI:10.1016/j.tet.2011.05.128
日期:2011.8
Tröger’s baseanalogues were prepared bearing methoxy groups in the 1,7-, 2,8-, 3,9- or 4,10-positions. These compounds were converted to their dihydroxy analogues in excellent yields upon treatment with boron tribromide and the 4,10-dihydroxy analogue could be prepared by directly from 4-hydroxyaniline. The synthetic utility of the dihydroxy-functionalised compounds as building blocks was demonstrated
A new bis[cobalt(II)porphyrin]‐Tröger'sbase conjugate was studied as a potential receptor for methyl esters of several amino acids. The conjugate was prepared as racemate, and then resolved via preparative high‐performance liquid chromatography (HPLC) on a chiral column. The high affinity to lysine, histidine, and proline methyl esters was found by complexation studies followed by UV‐Vis spectroscopy
Exploration of the bicyclo[3.3.1]nonane system as a template for the development of new ligands for the estrogen receptor
作者:Rajeev S Muthyala、Kathryn E Carlson、John A Katzenellenbogen
DOI:10.1016/j.bmcl.2003.08.061
日期:2003.12
Three novel structural motifs based on a bicyclo [3.3.1]nonane template were examined as new ligands for estrogen receptor (ER). Type III compounds emerged as the most promising leads for developing high-affinity ER ligands, but they showed little selectivity for either ER subtype. Type II compounds, on the other hand, despite their lower affinity, exhibited significant ERbeta binding selectivity.