合成了基于带有四个磷酸酯基团的基于甘脲的骨架的分子镊子,该分子镊子能够结合水溶液中的有机胺。这项工作报告了通过1 H NMR滴定确定的该分子镊子和胺客体的30种配合物的Ka值。疏水腔和磷酸基团均有助于结合。由于空间冲突和库仑排斥,较松散的分子和带有负电荷基团的分子(如氨基酸中的羧酸盐)的结合较不紧密。磷酸基团与铵客体的狭窄空腔和强离子相互作用有利于脂肪族二胺的结合。这些结合特性使该系统与结构上相关的分子夹和镊子明显区分开。
The present invention provides a (meth)acrylate manufacturing method characterized in that when manufacturing a (meth) acrylate by an ester exchange reaction between an alcohol and a monofunctional (meth)acrylate using catalyst A and catalyst B together, contact treatment of the ester exchange reaction product with adsorbent C is performed. Catalyst A: One or more kinds of compounds selected from a group consisting of cyclic tertiary amines with an azabicyclo structure and salts or complexes thereof, amidine and salts or complexes thereof, compounds with a pyridine ring and salts or complexes thereof, phosphines and salts or complexes thereof, and compounds with a tertiary diamine structure and salts or complexes thereof. Catalyst B: One or more kinds of compounds selected from a group consisting of compounds comprising zinc. Adsorbent C: One or more kinds of compounds selected from a group consisting of oxides and hydroxides comprising at least one of magnesium, aluminum and silicon.
A glycoluril dimer–triptycene hybrid receptor: synthesis and molecular recognition properties
作者:Wenjin Liu、Xiaoyong Lu、Zihui Meng、Lyle Isaacs
DOI:10.1039/c8ob01575a
日期:——
The strategic combination of the methylene bridged glycoluril dimer and triptycene skeletons delivers acyclic water soluble hybrid receptor 1 which is analogous to cucurbit[6]uril. The molecular recognition properties of host 1 toward hydrophobic cationic guests are investigated in detail by a combination of 1H NMR spectroscopy and isothermal titration calorimetry (ITC) studies. The fluorescence emission
亚甲基桥甘醇二聚体和三萜骨架的战略组合可提供类似于葫芦[6] uril的无环水溶性杂化受体1。通过1 H NMR光谱学和等温滴定量热法(ITC)研究的结合,详细研究了主体1对疏水性阳离子客体的分子识别特性。的荧光发射1可以是在形成选择性地且有效地淬灭1·26和1·28种复合物。
(Meth)acrylate manufacturing method
申请人:TOAGOSEI CO., LTD.
公开号:US10266476B2
公开(公告)日:2019-04-23
The present invention provides a (meth)acrylate manufacturing method characterized in that when manufacturing a (meth)acrylate by an ester exchange reaction between an alcohol and a monofunctional (meth)acrylate using catalyst A and catalyst B together, contact treatment of the ester exchange reaction product with adsorbent C is performed. Catalyst A: One or more kinds of compounds selected from a group consisting of cyclic tertiary amines with an azabicyclo structure and salts or complexes thereof, amidine and salts or complexes thereof, compounds with a pyridine ring and salts or complexes thereof, phosphines and salts or complexes thereof, and compounds with a tertiary diamine structure and salts or complexes thereof. Catalyst B: One or more kinds of compounds selected from a group consisting of compounds comprising zinc. Adsorbent C: One or more kinds of compounds selected from a group consisting of oxides and hydroxides comprising at least one of magnesium, aluminum and silicon.
Pillar[
<i>n</i>
]MaxQ: A New High Affinity Host Family for Sequestration in Water
作者:Weijian Xue、Peter Y. Zavalij、Lyle Isaacs
DOI:10.1002/anie.202005902
日期:2020.8.3
We report the synthesis, X‐ray crystal structure, and molecular recognition properties of pillar[n ]arene derivative P[6]AS , which we refer to as Pillar[6]MaxQ along with analogues P[5]AS and P[7]AS toward guests 1 –18 . The ultratight binding affinity of P[5]AS and P[6]AS toward quaternary (di)ammonium ions renders them prime candidates for in vitro and in vivo non‐covalent bioconjugation, for imaging
我们报告了柱[ n ]芳烃衍生物P[6]AS的合成、X射线晶体结构和分子识别特性,我们将其与类似物P[5]AS和P[7一起称为Pillar[6]MaxQ ]AS面向客人1 – 18。P[5]AS和P[6]AS对季(二)铵离子的超紧密结合亲和力使其成为体外和体内非共价生物共轭、成像和递送应用以及体内螯合剂的主要候选者。
A Modular Phosphorylated Glycoluril‐Derived Molecular Tweezer for Potent Binding of Aliphatic Diamines
作者:Michael Heilmann、Konrad Tiefenbacher
DOI:10.1002/chem.201902556
日期:2019.10.8
capable of binding organic amines in aqueous solution. This work reports the Ka values for 30 complexes of this molecular tweezer and amine guests, determined by means of 1 H NMR titrations. Both the hydrophobic cavity and the phosphate groups contribute to the binding. Bulkier molecules and molecules bearing negatively charged groups like carboxylates in amino acids bind less tightly due to a steric clash
合成了基于带有四个磷酸酯基团的基于甘脲的骨架的分子镊子,该分子镊子能够结合水溶液中的有机胺。这项工作报告了通过1 H NMR滴定确定的该分子镊子和胺客体的30种配合物的Ka值。疏水腔和磷酸基团均有助于结合。由于空间冲突和库仑排斥,较松散的分子和带有负电荷基团的分子(如氨基酸中的羧酸盐)的结合较不紧密。磷酸基团与铵客体的狭窄空腔和强离子相互作用有利于脂肪族二胺的结合。这些结合特性使该系统与结构上相关的分子夹和镊子明显区分开。