Macrocyclic bis-urea receptor: Synthesis, crystal structure and phosphate binding properties
作者:Xi Shu、Ruyu Wang、Yu Fan、Shoujian Li、Chao Huang
DOI:10.1016/j.tetlet.2019.02.004
日期:2019.3
A macrocyclic bis-urea receptor (L1) and two acyclic bis-urea analogues (L2 and L3) have been synthesized. The crystal structure of L1 was obtained. The experimental results show that the receptor L1 has high selectivity to H2PO4−. Meanwhile, compared with the acyclic receptors L2 and L3, L1 has higher binding ability to H2PO4−. The results of density functional theory (DFT) calculations deepened our
已经合成了大环双脲受体(L1)和两个无环双脲类似物(L2和L3)。获得了L1的晶体结构。实验结果表明,该受体L1具有高的选择性至H 2 PO 4 - 。同时,随着无环受体相比L2和L3,L1具有更高的结合能力与H 2 PO 4 - 。密度泛函理论(DFT)计算的结果加深了我们对L1构象稳定性及其阴离子结合特性的了解。
Reversible anion-templated self-assembly of [2+2] and [3+3] metallomacrocycles containing a new dicopper(i) motif
作者:Emily F. V. Dry、Jack K. Clegg、Boris Breiner、Daniel E. Whitaker、Roman Stefak、Jonathan R. Nitschke
DOI:10.1039/c1cc11206f
日期:——
A new dicopper(I) complex is reported that can be incorporated into extended architectures through multitopic carboxylate linkers; reversible carboxylate templation under pH control led to the formation of [2+2] and [3+3] metallomacrocycles.
Synthesis and properties of a new series of trögerophanes
作者:Alhussein A. Ibrahim、Mutsumi Matsumoto、Yuji Miyahara、Kenji Izumi、Masahiko Suenaga、Nobujiro Shimizu、Takahiko Inazu
DOI:10.1002/jhet.5570350139
日期:1998.1
A newseries of macrocyclic compounds with one or two Tröger base skeletons has been synthesized by condensing mono-, di-, tri-, and teraethyleneglycol bis(p-aminophenoxy) ethers with formalin in the presence of concentrated hydrochloric acid in ethanol at room temperature for 13 days. This simple one-step cyclization provided 19 in remarkably high yield (46%) and 17, 18, and 20 in yields reflecting
New supramolecular hosts: Synthesis and cation binding studies of novel Tröger's base-crown ether composites
作者:Alla Manjula、Madhavarao Nagarajan
DOI:10.1016/s0040-4020(97)00759-x
日期:1997.8
A simple and straightforward synthesis of a novel class of supramolecular hosts containing the Tröger's base moiety is reported. The cationbinding properties of these macrocycles were investigated using Cram's picrate extraction method.
Diversity Driven Decoration and Ligation of Fullerene by Ugi and Passerini Multicomponent Reactions
作者:Bruno B. Ravanello、Nalin Seixas、Oscar E. D. Rodrigues、Rafael S. da Silva、Marcos A. Villetti、Andrej Frolov、Daniel G. Rivera、Bernhard Westermann
DOI:10.1002/chem.201802414
日期:2018.7.11
isocyanide‐multicomponentreactions (I‐MCRs). The approach comprises the use of Passerini and Ugi reactions for assembling pseudo‐peptidic scaffolds (i.e., N‐alkylated and depsipeptides, peptoids) on carboxylic acid‐functionalized fullerenes. The method showed wide substrate scope for the oxo and isocyanide components, albeit the Ugi reaction proved efficient only for aromatic amines. The approach was successfully
为了为富勒烯的多样性导向装饰和连接提供一种有效且通用的方法,我们报告了第一个基于异氰酸酯-多组分反应(I-MCR)的C 60衍生化策略。该方法包括使用Passerini和Ugi反应在羧酸官能化的富勒烯上组装假肽支架(即N-烷基化和二肽,类肽)。该方法显示了羰基和异氰酸酯组分的广泛底物范围,尽管已证明Ugi反应仅对芳族胺有效。该方法已成功用于寡肽和聚乙二醇链(PEG)与C 60的连接,以及用于建造双天线以及PEG固定的二聚体富勒烯。对于所分析的所选化合物,形成1 O 2的量子产率显着。