CAS: 33089-37-1; 1,4,7,10,13,16,19,22-Octaoxacyclotetracosane

上下游产品

tetraethylene glycol di(p-toluenesulfonate) Tetraethylene glycol °Ctaethylene glycol diethylene glycol 2O3*C16H32O8*C45H38N2CH2O3*C16H32O8*C45H38N2

📜八乙二醇置于氢氧化钾,对甲苯磺酸体系中,化学反应生成24-冠-8-醚
参考文献:Effect Of Crown Ethers On The Selectivity Of Electrophilic Aromatic Nitration
标题:Effect Of Crown Ethers On The Selectivity Of Electrophilic Aromatic Nitration
摘要:
Doi:10.1021/jo00221A023

专利信息

专利号:US-2024400533-A1
优先权日:2023-06-02
标题 :General Solid-Phase Synthesis of Crown Ethers
发明人：TRANT JOHN F; NASRI SARAH; HAYWARD JOHN J
权利人:UNIV OF WINDSOR
摘要:In a preferred embodiment, there is provided a method for preparing a crown ether, the method comprising: loading a resin having a resin functional group with a linking compound having a functional group selected for coupling to the resin functional group and at least two carbon atoms each having a substituent; coupling the linking compound to a polyethylene glycol having two terminal carbon atoms each bonded to an optionally protected terminal hydroxyl group to obtain a cyclized intermediate, whereby one said at least two carbon atoms or the substituent and an associated one of the two terminal carbon atoms or the hydroxyl groups undergo a coupling or substitution reaction; and removing the linking compound and the cyclized intermediate from the resin.

专利号:US-9919297-B2
优先权日:2013-08-05
标题 :Zeolite, and production method and use therefor
发明人：CHEN HAIJUN; TAKEWAKI TAKAHIKO; MATSUO TAKESHI
权利人:MITSUBISHI CHEM CORP
摘要:The present invention provides a novel high-silica zeolite having a high molar ration of a tetravalent element (Y) to a trivalent element (X) in terms of oxide. n A zeolite, comprising at least a trivalent element X and a tetravalent element Y, wherein a molar ratio n=YO 2 /X 2 O 3 in terms of oxide is 9.5 or more, and the zeolite comprises an RHO-type structure, or comprising at least a trivalent element X and a tetravalent element Y, wherein a molar ratio n=YO 2 /X 2 O 3 in terms of oxide is 9.5 or more, and a characteristic X-ray diffraction pattern. This zeolite is produced by hydrothermal synthesis of a zeolite from an aqueous gel that is prepared by adding a mixed solution comprising a crown ether, an alkali, and water to a solution containing an aluminum atom material, and by then dropwise adding a liquid containing a silicon atom material.

专利号:WO-9003944-A1
优先权日:1988-10-10
标 题 :Synthesis of zeolites having a faujasite structure

专利号:US-6984734-B2
优先权日:2002-02-26
标 题 :Cyclo[n]pyrroles and methods thereto
发明人：SESSLER JONATHAN L; SEIDEL DANIEL; BOLZE FREDERIC R; KOEHLER THOMAS
权利人:UNIV TEXAS
摘要:The present invention provides an oxidative coupling procedure that allows efficient synthesis of novel cyclo[n]pyrrole macrocycles. Therefore, the present invention provides cyclo[n]pyrroles where n is 6, 7, 8, 9, 10, 11, or 12, and derivatives, multimers, isomers, and ion and neutral molecule complexes thereof as new compositions of matter. A protonated form of cyclo[n]pyrrole displays a gap of up to 700 nm between strong Soret and Q-like absorption bands in the electronic spectrum, demonstrating no significant ground state absorption in the visible portion of the electronic spectrum. Uses of cyclo[n]pyrroles as separation media, nonlinear optical materials, information storage media and infrared filters are provided.

专利号:CN-113441183-B
优先权日:2021-07-16
标题 :Crown ether organic polymer loaded with alkali metal ions, preparation method and application of crown ether organic polymer in aspect of catalytic synthesis of cyclic carbonate

专利号:EP-0364352-A1
优先权日:1988-10-10
标 题:Method for the synthesis of zeolites belonging to the structural family of faujasite, products obtained and their use in adsorption and catalysis