- An: In situ approach to functionalize metal-organic frameworks with tertiary aliphatic amino groups
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Metal-catalyzed reductive amination of formyl-containing linkers with N,N-dialkylformamide solvents is concomitant with the solvothermal coordination assembly, leading to novel MOFs functionalized with tertiary aliphatic amino groups. This illustrates a novel one-pot strategy to functionalize MOFs through in situ organic transformation. The UiO-66 MOFs partially functionalized with the amino groups are highly active heterogeneous catalysts for Knoevenagel condensation.
- Xi, Fu-Gui,Sun, Wei,Dong, Zhi-Yun,Yang, Ning-Ning,Gong, Teng,Gao, En-Qing
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- Ionic liquid-decorated COF and its covalent composite aerogel for selective CO2 adsorption and catalytic conversion
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Atmospheric CO2 is closely related to the greenhouse effect. Therefore, new practical materials and techniques for highly selective CO2 adsorption and catalytic conversion are imperative. Covalent composites of covalent organic frameworks (COFs) with polymers (oligomers) might be a promising approach to meeting the multifaceted requirements of CO2 treatment. Herein, a novel COF-chitosan composite aerogel (COF-IL@chitosan) was designed and fabricated by chemical crosslinking of an allyl-imidazolium ionic liquid-decorated COF (COF-IL) with a thiol-attached chitosan (chitosan-SH) binder via a photoinduced thiol-ene reaction. The crystalline structure, highly selective CO2 adsorption and catalytic conversion features of COF-IL were found to be well maintained in the composite aerogel. The generated covalently coupled COF-chitosan composite material COF-IL@chitosan was found to be robust, uniform and processable even with a remarkably high COF loading (up to 80 wt%). More importantly, the processable COF-IL@chitosan aerogel could be readily shaped into a simplified fixed-bed reactor model via a facile templated freeze-drying procedure, and a scaled-up recyclable CO2 cycloaddition reaction was realized.
- Ding, Luo-Gang,Yao, Bing-Jian,Li, Fei,Shi, Shao-Chuan,Huang, Ning,Yin, Hua-Bing,Guan, Qun,Dong, Yu-Bin
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- Synthesis and solvent-free polymerisation of vinyl terephthalate for application as an anode material in organic batteries
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The synthesis and polymerisation of dimethyl 2-vinylterephthalate M1 for possible applications as an anode material in organic secondary batteries are reported. M1 exhibits a vinyl group as a polymerisable unit while the carboxylate moieties serve as cation (Li+, Na+) coordinating sites. The gram-scale synthesis of M1 is described via three different routes in order to evaluate the route with the highest overall yield. Furthermore, different conditions for free radical polymerisation are investigated for obtaining polymer P1 with high molecular weights in order to study the impact of immobilising the carboxylate redox-active centres in a polymer on the charge/discharge cycling stability when used in an organic battery. In order to synthesis suitable materials for battery investigations, P1 was post-functionalised to the corresponding lithium salt P1-Li, which was further electrochemically investigated. Cyclic voltammetry measurements showed for P1-Li redox activity in the range of 0.5-1.2 V vs. Li+/Li which assigns it as a candidate for the anode. Under the present experimental conditions, the galvanostatic measurements of P1-Li exhibited a specific capacity of 64 mA h g1. It is further demonstrated that P1-Li shows an improved cycling stability of 83% discharge capacity remaining after 100 cycles compared to the parent monomer (44%).
- Nauroozi, Djawed,Pejic, Marijana,Schwartz, Pierre-Olivier,Wachtler, Mario,B?uerle, Peter
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p. 111350 - 111357
(2016)
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- Imidazole sulfonic acid-based metal organic framework as well as preparation method and application thereof
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The invention provides a metal organic framework based on imidazole sulfonic acid as well as a preparation method and application. The metal organic framework based on the imidazole sulfonic acid is obtained by synthesizing and modifying a metal organic framework based on an imidazole ligand through a sulfonic compound; a chemical structural formula of the metal organic framework based on the imidazole ligand is [Zr6O4(OH)4L6]n, wherein n is a natural number more than 0; L is an organic ligand L and a chemical structural formula of the organic ligand L is show in the description; a synthesis method of the organic ligand L comprises the following steps: firstly, enabling 3-methyl-terephthalic acid to react to obtain an intermediate A; secondly, taking the intermediate A and bromosuccinimide as raw materials and reacting to obtain an intermediate B; thirdly, taking the intermediate B and imidazole as raw materials and reacting to obtain an intermediate C; finally, carrying out hydrolysis reaction on the intermediate C to prepare the organic ligand L. The metal organic framework based on the imidazole sulfonic acid has a catalytic effect on benzaldehyde under normal pressure and has the characteristics of moderate reaction conditions, short reaction time, less dosage of a catalyst and capability of being recycled and repeatedly utilized.
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Paragraph 0101-0102
(2020/04/09)
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- A ion-containing liquid structure primitives covalent - organic framework catalytic reactor and its preparation method and application (by machine translation)
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The present invention relates to a containing imidazole salt ion liquid structure primitives covalent - organic framework crystal material, and through the mercapto - ene Click reaction, to form a covalent bond with the ion-containing liquid structure primitives covalent - organic framework material anchored in the chitosan in the matrix, development based on the covalent cross-linking covalent - organic framework material device of a target strategy. The imidazole-containing salt ion liquid structure primitives covalent - organic framework crystal material to the CO2 It has higher selectivity adsorption and catalytic performance, in gas separation and in the catalytic conversion has good application potential. Covalent - organic framework of the crystalline material in the above-mentioned characteristic of the composite aerogel have been obtained in the very good maintenance, and can be used for fixed-bed catalytic reactor, under normal pressure to realize the CO2 The cycloaddition reaction of the flowing through continuous catalytic, to replace the traditional reaction bottle catalytic system provides a new idea. (by machine translation)
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Paragraph 0142-0144; 0145; 0146
(2019/01/08)
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- Metal-organic framework material modified based on alkyl sulfhydryl and synthesis method thereof
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The invention provides a metal-organic framework material modified based on alkyl sulfhydryl and a synthesis method thereof. The general formula of the metal-organic framework material is expressed as a formula I which is Zr6O4(OH)4(L)x. In the formula I, x is greater than or equal to 4 and is less than or equal to 6, and L has a structure as shown in a formula II. According to the metal-organic framework material, the L with the structure as shown in the formula II is used as a ligand, and L reacts with ZrCl4 to generate a Zr6O4 metal cluster three-dimensional frame structure, so that the metal-organic framework material has high chemical stability and heat stability; in addition, the sulfhydryl functional group in the metal-organic framework material is difficultly oxidized. Experiment results show that the frame can be collapsed when the highest temperature of the metal-organic framework material can reach 420 DEG C or higher; after the metal-organic framework material with the general formula expressed as the formula I is soaked in a strong alkali solution with a pH value of 12 and a strong acid solution with a pH value of 1 for 3 days, X-ray powder diffraction shows that the metal-organic framework material can still retain the basic framework structure.
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Paragraph 0064-0068
(2018/03/01)
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- Alkylthiol functionalized aromatic carboxylic acid compound and preparation method thereof
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The invention provides an alkylthiol functionalized aromatic carboxylic acid compound as well as a preparation method and application thereof. The compound has the structure as shown in formula I in the description. In the compound with the structure as shown in formula I, a mercapto group is separated from a benzene ring by a methylene group, the mercapto group is released, so that the mercapto group can better exert the functionalization effect and is easy to modify, and reactivity is higher; heavy metal ions can be adsorbed; flexibility of the side-chain benzyl mercaptan can be increased. Experimental results show that the compound can adsorb Hg.
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Paragraph 0032; 0048; 0049-0052; 0072-0074
(2017/12/06)
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- PREPARATION OF TRANS,TRANS MUCONIC ACID AND TRANS,TRANS MUCONATES
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The present invention relates to the isomerization of cis,cis and/or cis,trans muconic acid or esters thereof to trans,trans muconic acid or esters thereof and to the esterification of such muconic acids.
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Page/Page column 30
(2010/12/29)
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- PYRIDYL INHIBITORS OF HEDGEHOG SIGNALLING
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The invention provides novel inhibitors of hedgehog signaling that are useful as s therapeutic agent for treating malignancies where the compounds have the general formula (I): where A, X, Y R1, R2, R3, R4, m and n are as described herein.
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Page/Page column 140-141
(2009/11/29)
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- DIPEPTIDYL PEPTIDASE-IV INHIBITORS
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The present invention relates generally to pyrrolidine and thiazolidine DPP-IV inhibitor compounds. The present invention also provides synthetic methods for preparation of such compounds, methods of inhibiting DPP-IV using such compounds and pharmaceutical formulations containing them for treatment of DPP-IV mediated diseases, in particular, Type-2 diabetes.
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Page/Page column 77-78
(2008/06/13)
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- Pyridyl inhibitors of hedgehog signalling
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The invention provides novel inhibitors of hedgehog signaling that are useful as a therapeutic agents for treating malignancies where the compounds have the general formula I: wherein A, X, Y R1, R2, R3, R4, m and n are as described herein.
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Page/Page column 99-100
(2010/10/20)
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- 2-Substituted-5-oxo-5H-dibenzo[a,d]cycloheptenes, the salts and esters thereof, having pharmaceutical activity
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2-Substituted-5-oxo-5H-dibenzo[a,d]cycloheptenes represented by the following formula: STR1 where R' is hydrogen, alkyl having 1 to 12 carbon atoms, or STR2 where n is an integer from 2 to 4, inclusive, and R4 and R5 are independently lower alkyl having 1 to 6 carbon atoms or together R4 and R5 and the nitrogen atom to which they are attached form a heterocyclic ring having 5 or 6 total ring atoms; one of R2 and R3 is hydrogen and the other is hydrogen, methyl, or ethyl, or together R2 and R3 are methylene; and the pharmaceutically acceptable salts thereof. The compounds have anti-inflammatory, analgesic, and antipyretic activities and, accordingly, are useful in the treatment of inflammation, pain and/or pyrexia.
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- 2-Substituted-5-oxo-5H-dibenzo-[A,D]cycloheptenes, the esters and ethers thereof, having pharmaceutical activity, and methods and compositions for the use thereof
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2-Substituted-5-oxo-5H-dibenzo [a,d]cycloheptenes represented by the following formula: SPC1 Where one of R2 and R3 is hydrogen, and the other is hydrogen, methyl, or ethyl, or together R2 and R3 are methylene; the dotted line represents an optional, additional bond between the carbon atoms at the 10- and 11-positions; and the pharmaceutically acceptable esters and ethers thereof. The compounds have anti-inflammatory, analgesic, and antipyretic activities and, accordingly, are useful in the treatment of inflammation, pain and pyrexia.
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