CAS: 2367-82-0; 1,2,3,5-Tetrafluorobenzene

上下游产品

CAS号315-14-0 2,4,6-三氟硝基苯 | CAS号363-72-4 五氟苯 | CAS号75-77-4 三甲基氯硅烷 | CAS号1559-86-0 2,3,4,6-四氟溴苯 | CAS号1559-87-1 1,3-二溴四氟苯 | CAS号357-85-7 1,5-Di-H-hexafl... | CAS号7732-18-5 水 | CAS号511295-00-4 2,3,4,6-四氟苯硼酸 | CAS号363-80-4 2,3,5-三氟苯胺 | CAS号67815-57-0 1,3-二碘四氟苯 | CAS号455-38-9 间氟苯甲酸 | CAS号511295-00-4 2,3,4,6-四氟苯硼酸 | CAS号446-17-3 2,4,5-三氟苯甲酸 | CAS号392-56-3 六氟苯 | CAS号363-72-4 五氟苯 | CAS号773-53-5 1,2,3,3,4,6,6-h... | CAS号357-85-7 1,5-Di-H-hexafl... | CAS号2358-29-4 2,3,6-三氟苯甲酸 | CAS号314-41-0 2,3,4,6-四氟硝基苯 | CAS号32890-92-9 2,3,4,6-四氟苯甲酸

2,3,4,6-四氟苯硼酸置于三氟乙酸,Potassium Hydroxide体系中,用 1,4-二氧六环,水 用作溶剂,化学反应生成1,2,3,5-四氟苯
参考文献:碱催化的芳基-B(oh)2的原去硼烷:从协调的质子转移到瞬态芳基阴离子的解放.
标题:碱催化的芳基-B(oh)2的原去硼烷:从协调的质子转移到瞬态芳基阴离子的解放.
摘要:Kuivila于50年前发表的开创性研究表明,硼酸酯的ipso质子化是芳基硼酸的碱催化原脱硼硼烷的机理.但是,该研究仅限于酸性条件下的紫外分光光度法分析,并且估计了水的缔合常数(k A).借助于NMR,停止流ir和骤冷流技术,现在已经在70oc的二恶烷水溶液中,在ph> 13的条件下,测定了30种不同的芳基硼酸的碱催化原硼酸脱氢反应的动力学.研究中包括c 6 H N F (5-N) B(oh)2的所有20个异构体半衰期跨越9个数量级:<3毫秒至6.5个月.在具有ph率分布,对组合ķ一个和δ小号⧧值,动力学同位素效应(2 H,10 B,13 C),线性自由能的关系,并密度泛函理论计算,我们已经确定,涉及一种机械制度硼酸酯的单分子杂化与协同的ipso质子化/ C-b裂解竞争.芳基硼酸的相对路易斯酸度与它们的原脱硼氢硼酸速度不相关,特别是当存在邻位取代基时.值得注意的是,3,5-二硝基苯基硼酸
Doi:10.1021/jacs.7B07444

专利信息

专利号:US-5026929-A
优先权日:1990-02-08
标题:Synthesis of highly fluorinated aromatic compounds
发明人：MARSELLA JOHN A; PEZ GUIDO P; COUGHLIN ANNE M
权利人:AIR PROD & CHEM
摘要:A process is disclosed for making a highly fluorinated aromatic compound by contacting a perfluorocycloalkane, such as perfluorodecahydronaphthalene, with a complex of a metal from Groups IA and IIA of the Periodic Table and an organic electron acceptor. The reaction is carried out in an organic solvent and under reducing conditions which are relatively moderate. Best results are obtained using a perfluorocycloalkane having 2-4 condensed rings and a complex of either sodium or lithium and benzophenone thereby making a perfluorinated condensed ring aromatic compound such as perfluoronaphthalene or perfluorophenanthrene.

专利号:US-7652178-B2
优先权日:2007-02-26
标题:Perfluoroparacyclophane and methods of synthesis and use thereof
发明人：DOLBIER JR WILLIAM R; XIE PUHUI; KUMAR RAKESH
权利人:SPECIALTY COATING SYSTEMS INC
摘要:A composition comprising perfluoro-[2,2]-paracyclophane dimer compound is disclosed. The synthesis reaction of the paracyclophane dimer from 1,4-bis(chlorodifluoromethane)-2,3,5,6-tetrafluorobenzene involves heating in the presence of a metal catalyst and a solvent. A perfluorinated paraxylylene coating formed from the perfluorinated paracyclophane dimer is also disclosed.

专利号:US-8952207-B2
优先权日:2007-09-11
标题:Copper-catalyzed C—H bond arylation
发明人：DAUGULIS OLAFS; DO HIEN-QUANG
权利人:DAUGULIS OLAFS; DO HIEN-QUANG; UNIV HOUSTON SYSTEM
摘要:The present invention is a one-step method for efficiently converting carbon-hydrogen bonds into carbon-carbon bonds using a combination of aryl halides, a substrate, and a copper salt as catalyst. This method allows faster introduction of complex molecular entities, a process that would otherwise require many more steps. This invention is particularly relevant for the organic synthesis of complex molecules such as, but not limited to, pharmacophores and explosives.

专利号:CN-108401432-A
优先权日:2016-12-05
标题 :Catalyst composition for the synthesis of olefin copolymers and method for preparing olefin copolymers

专利号:US-2008207961-A1
优先权日:2007-02-26
标 题 :Perfluoroparacyclophane and methods of synthesis and use thereof

专利号:WO-2008106286-A2
优先权日:2007-02-26
标题 :Perfluoroparacyclophane and methods of synthesis and use thereof