CAS: 17823-46-0; 4-Bromo-2,3,5,6-Tetrafluorobenzotrifluoride

上下游产品

1,2,4,5-tetrafluoro-3-(trifluoromethyl)benzene perfluorotoluene 4-trifluoromethyl-2,3,5,6-tetrafluorothiophenol bromopentafluorobenzene 2,3,5,6-tetrafluoro-4-(trifluoromethyl)benzaldehyde trimethyl(2,3,5,6-tetrafluoro-4-(trifluoromethyl)phenyl)silane 1,2,4,5-tetrafluoro-3-(trifluoromethyl)benzene 2H5)2)3PClBr(N(C2H5)2)3PClBr

📜八氟甲苯置于aluminum Tri-Bromide体系中,用 Neat (No Solvent) 用作溶剂,化学反应 12.5H,以64%的收率获得4-溴-2,3,5,6-四氟三氟甲苯
参考文献:三(全氟甲苯基)硼烷-硼lewis超酸
标题:三(全氟甲苯基)硼烷-硼lewis超酸
摘要:通过用四聚体f 3 Cc 6 F 4-Cu I处理三溴化硼制备三[四氟-4-(三氟甲基)苯基]硼烷(btolf).F 3 Cc 6 F 4-Cu I由f 3 Cc 6 F 4 Mgbr和溴化铜(i)生成.通过gutmann-beckett方法评估的btolf的lewis酸度和计算出的氟离子亲和力分别为9%和10%,高于三(五氟苯基)硼烷(bcf),甚至高于sbf 5.Btolf和bcf的分子结构通过气相电子衍射确定,而btolf的分子结构也通过单晶x射线衍射确定.
Doi:10.1002/anie.201704097

专利信息

专利号:US-7169879-B2
优先权日:2004-05-28
标 题:Bisphenyl-2,3,5,6-tetrafluoro-4-trifluoromethylphenyl phosphine oxide derivative and synthesis thereof
发明人：YOON TAE-HO; LEE CHUL WOONG; KWAK SANG MIN
权利人:KWANGJU INST SCI & TECH
摘要:The present invention relates to bisphenyl-2,3,5,6-tetrafluoro-4-trifluoromethylphenylphosphine oxide compounds and synthesis thereof, more particularly to novel bisphenyl-2,3,5,6-tetrafluoro-4-trifluoromethylphenylphosphine oxide compounds having both a perfluorinated benzene substituent and a phosphine oxide moiety. Compounds of the invention can be useful as a monomer for preparing polyimides having a low dielectric constant and a superior adhesion while maintaining the superior thermal and mechanical properties of polyimides themselves, and their synthesis thereof.