CAS: 703-87-7; 1,2,4,5-Tetrafluoro-3,6-Dimethylbenzene

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CAS号776-40-9 2,3,5,6-四氟对二溴苄 | CAS号92814-00-1 2,3,5,6-四氟-4-甲基溴苄 | CAS号652-36-8 四氟对苯二甲酸 | CAS号1785-64-4 4,5,7,8,12,13,1...

📜Trimethyl-[[2,3,5,6-Tetrafluoro-4-[(Trimethylazaniumyl)Methyl]Phenyl]Methyl]Azanium;Dichloride 反应生成 2,3,5,6-四氟对二甲苯
参考文献:Richardson,P. J.;Davies,G. R.
标题:Richardson,P. J.;Davies,G. R.

专利信息

专利号:US-6495208-B1
优先权日:1999-09-09
标 题 :Near-room temperature CVD synthesis of organic polymer/oxide dielectric nanocomposites
发明人：DESU SESHU B; SENKEVICH JOHN J
权利人:VIRGINIA TECH INTELL PROP
摘要:Nanocomposite thin films with low dielectric constants are made by the simultaneous deposition of an oxide dielectric and an organic polymer at near room temperatures. Suitable oxides include SiO 2 , and suitable organic polymers include poly(chloro-para-xylylene). The two dielectric materials, when deposited, form nanocomposites characterized by nanometer-sized domains of dielectric material. The nanocomposite thin films of this invention are useful as dielectric layers for interlevel dielectric (ILD) and intermetal dielectric (IMD) dielectrics in the manufacture of semiconductor devices as well as for thin films for flat panel displays, food wraps, hybrid ceramics, glass, hard disk drives, and optical disk drives. Additionally, the invention comprises semiconductor devices and semiconductor chips made incorporating nanocomposites deposited by chemical vapor deposition.

专利号:US-8987451-B2
优先权日:2012-01-03
标题 :Synthesis of cyclometallated platinum(II) complexes
发明人：TSAI JUI-YI; KOTTAS GREGG; YEAGER WALTER
权利人:UNIVERSAL DISPLAY CORP
摘要:A single-step method of making tetradentate platinum complexes is disclosed. The method advantageously allows the formation of a platinum complex in a single step, even with sterically hindered ligands, without the use of highly reactive intermediates. The compounds made by the disclosed method are useful in OLED applications.

专利号:US-7544847-B1
优先权日:2007-12-28
标 题:Method for producing 1,4-bis (dichloromethyl) tetrafluorobenzene
发明人：HO CHAN-YUAN; LIN TSAIR-FENG; LIN CHUN-HSU; WANG SHIEH-JUN
权利人:YUAN SHIN MATERIALS TECHNOLOGY; CHUN SHAN INST OF SCIENCE AND
摘要:A method for producing 1,4-bis(dichloromethyl)tetrafluorobenzene is disclosed, which is achieved by reacting tetrafluoroterephthaldehyde, SOCl 2 and organic solvents. In the synthesis of 1,4-bis(dichloromethyl)-tetrafluorobenzene by adding formamides as catalyst, there are remarkable advantages which include shortening the reaction time; simplifying the synthesizing steps and raising the yield of the product.

专利号:US-2019181348-A1
优先权日:2017-09-27
标题 :Branch point effect on structure and electronic properties of conjugated polymers
发明人：BRIDGES COLIN R; WANG MING; FORD MICHAEL J; BAZAN GUILLERMO C; SEGALMAN RACHEL A
权利人:UNIV CALIFORNIA
摘要:Synthesis of lyotropic semiconducting polymers having novel side chains enabling control over crystalline fraction, crystalline orientation, and the unit cell (specifically the Ï€-stacking distance). Moving the branch point in the side chain further from the conjugated backbone not only retains the lyotropic liquid crystalline behavior as observed by UV-vis and POM, but also achieves reduced Ï€-stacking distance. This results in higher charge carrier mobility, reaching (in one or more examples) a mobility of at least 0.41 cm 2 V −1 s −1 when the polymers were non-aligned.

专利号:US-4550206-A
优先权日:1983-01-26
标 题 :Method of preparing tetrahalobenzene compounds, chemical intermediates used therein and certain of the compounds themselves
发明人：RICHARDSON PETER J
权利人:ICI LTD
摘要:Tetrahalobenzene compounds of the formula (I): ##STR1## in which X is independently chloro or, preferably, fluoro and Y is hydrogen or --N + R 3 A - in which each R is independently C 1-4 alkyl and A is a radical capable of forming an anion A - , are prepared by n (a) alkylating a compound of formula (II): ##STR2## or a salt thereof, to form a compound of formula (III): ##STR3## (b) treating the compound of formula (III) with a quaternizing agent of formula RA to form a compound of formula (IV): ##STR4## and (c) partially or completely reductively cleaving the compound of formula (IV) to replace one or both --N + R 3 A - groups by hydrogen. n Compounds (I), in which Y is --N + R 3 A - , (III) and (IV) are novel. Compound (I) is useful in the synthesis of insecticides.

专利号:US-4492617-A
优先权日:1983-11-10
标 题:Method of preparing tetrahalobenzene compounds
发明人：DAVIES GWILYM R
权利人:ICI PLC
摘要:Tetrahalobenzene compounds of the formula (IX): ##STR1## in which each X is independently chloro or fluoro, are prepared by electrolyzing in a protic medium a compound of the formula (IV): ##STR2## in which X has the meaning already given, each R is independently C 1-4 alkyl and A is a radical capable of forming an anion A - . n The compounds are useful in the synthesis of insecticides.