CAS: 2050-47-7; 4,4'-Oxybis(Bromobenzene)

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CAS号101-84-8 二苯醚 | CAS号107-06-2 1,2-二氯乙烷 | CAS号589-87-7 对溴碘苯 | CAS号106-41-2 对溴苯酚 | CAS号106-39-8 对氯溴苯 | CAS号1972-28-7 偶氮二甲酸二乙酯 | CAS号53601-22-2 bis(4-bromophen... | CAS号108-86-1 溴苯 | CAS号5467-74-3 4-溴苯硼酸 | CAS号46919-42-0 [4-(4-bromophen... | CAS号2215-89-6 4,4'-二苯醚二甲酸 | CAS号21120-68-3 4-(4-溴苯氧基)苯甲酸 | CAS号21368-80-9 4-苯乙炔醚 | CAS号2097-04-3 ethoxy-[4-[4-[e... | CAS号2444-89-5 4-氯苯酯 | CAS号30427-95-3 1-Bromo-4-(4-ch... | CAS号30427-93-1 1-(4-溴苯氧基)-4-甲基苯 | CAS号101-80-4 4,4'-二氨基二苯醚(ODA) | CAS号14387-30-5 4,4’-氧代双苯甲酸二甲酯 | CAS号3096-86-4 ethyl 4-(4-etho...

4-溴苯酚置于titania Nanoparticles Supported On Silica体系中,化学反应 0.33H,以82%的收率获得4,4'-二溴二苯醚
参考文献:一种多溴联苯醚单体的固相合成方法与应用
标题:一种多溴联苯醚单体的固相合成方法与应用
摘要:本发明公开了一种多溴联苯醚单体的固相合成方法与应用,其解决了现有技术中对于多溴联苯醚的合成方法反应时间长,试剂腐蚀性大,后处理繁琐以及需要特制设备的问题,具有采用在研磨条件下固体超强酸催化合成多溴联苯醚的方法,避免使用强碱强酸性液体试剂,安全性高且清洁环保;合成时间为10‑30分钟,较"碘鎓盐‑偶联两步反应法"的反应时间大大缩短的效果.其技术方案为:包括如下步骤:溴代苯酚在固体超强酸的催化下发生脱水偶联反应,即得多溴联苯醚单体.

专利信息

专利号:US-4446078-A
优先权日:1982-01-21
标 题 :Process for the preparation of α,α-difluoroalkyl-thiophenyl ketones
发明人：DESBOIS MICHEL
权利人:RHONE POULENC SPEC CHIM
摘要:A process for the preparation of alpha , alpha -difluoroalkoxy or alpha , alpha -difluoroalkylthiophenyl ketones, in which a polyhaloalkoxybenzene or a polyhaloalkylthiobenzene is reacted with a carboxylic acid, a precursor or a derivative of this acid in the presence of boron trifluoride in such an amount that the absolute pressure of the boron trifluoride within the reaction vessel exceeds 1 bar, and in the presence of hydrofluoric acid as a solvent. The resultant products are useful as intermediates in the synthesis of compounds having phytosanitary (e.g., herbicidal) or pharmaceutical activity.

专利号:US-7615300-B2
优先权日:2005-08-30
标 题 :Development of novel proton-conductive polymers for proton exchange membrane fuel cell (PEMFC) technology
发明人：BAE CHULSUNG
权利人:REGENTS UNIVERSITY AND COMMUNI
摘要:New thermally and chemically stable sulfonic acid-containing polymers are synthesized via post-sulfonation of aromatic polymers. These new polymers provide unique benefits to proton exchange membrane fuel cell technology (“PEMFCâ€?). As a sulfonic acid moiety can be easily installed into an aromatic ring via electrophilic sulfonation, even in the presence of an electron-withdrawing substituent such as —F, rigid polymers consisting of aromatic rings at either the side chain or main chain can be prepared with a wide range of substituents and flexibility in properties. Novel synthetic procedures are provided for synthesis of the polymers.

专利号:US-4438043-A
优先权日:1982-04-22
标题:Process for preparation of di- or trifluoromethoxyphenyl ketones or di- or trifluoromethylthiophenyl ketones
发明人：DESBOIS MICHEL
权利人:RHONE POULENC SPEC CHIM
摘要:A process for the preparation of di- or trifluoromethoxyphenyl ketones or di- or trifluoromethylthiophenyl ketones, characterized in that, in a first stage, a di- or trihalomethoxybenzene or a di- or trihalomethylthiobenzene is reacted with a trihalomethylated aromatic or aliphatic compound in the presence of boron trifluoride in an amount such that the absolute pressure of boron trifluoride within the reaction vessel exceeds 1 bar, and in the presence of hydrofluoric acid as a solvent and in that, in a second stage, the product of the first stage is hydrolyzed. The resultant products are useful as intermediates in the synthesis of compounds having a pharmaceutical or phytosanitary (e.g., herbicidal) activity.

专利号:US-2007276139-A1
优先权日:2004-02-10
标题:Substituted Pixyl Protecting Groups for Oligonucleotide Synthesis
发明人：SONG QUANLAI; KHAMMUNGKHUNE SAK; ROSS BRUCE S; GRIFFEY RICHARD H
权利人:SONG QUANLAI; KHAMMUNGKHUNE SAK; ROSS BRUCE S; GRIFFEY RICHARD H
摘要:The present invention describes an improved hydroxyl protecting group of formula (1), wherein R 2 and R 7 are specified substituents and Q is O, S, NR 10 or N(Câ•?O)R 10 .

专利号:US-4259498-A
优先权日:1977-09-23
标 题 :Process for preparing benzisothiazole-1,1-dioxide and naphtho-1,2-thiazine-1,1-dioxide compounds
发明人：BLOOM STANLEY M; BORROR ALAN L; FOLEY JAMES W
权利人:POLAROID CORP
摘要:This invention relates to certain 3,3,-di(4'-OP-carbocyclic aryl)-2,3-dihydrobenz[d]isothiazole-1,1-dioxides (and-2,3-dihydronaphtho[1,8-de]-1,2-thiazine-1,1-dioxides) and to the preparation thereof by reacting (a) at least 2 equivalents of (i) a 4'-OP-carbocyclic aryllithium compound wherein P is a protecting group compatible with organometallic reagents or (ii) a 4'-OP-carbocyclic arylMgE compound wherein P is a protecting group compatible with organometallic reagents and E is chloro, bromo or iodo and (b) 1 equivalent of a compound selected from a 3-chlorobenz[d]isothiazole-1,1-dioxide and a 3-chloronaphtho[1,8-de]-1,2-thiazine-1,1-dioxide to give the corresponding 3,3-di(4'-OP-carbocyclic aryl)-2,3-dihydrobenz[d]isothiazole-1,1-dioxide or the corresponding 3,3-di(4'-OP-carbocyclic aryl)-2,3-dihydronaphtho[1,8-de]-1,2-thiazine-1,1-dioxide, which compounds are useful in the synthesis of phenol and 1-naphthol sulfam(na)-phthaleins employed, for example, as photographic optical filter agents and filter agent precursors.

专利号:US-4311839-A
优先权日:1977-09-23
标题 :Benzisothiazole and naphtho-1,2-thiazine compounds
发明人：BORROR ALAN L; CINCOTTA LOUIS; FOLEY JAMES W; KAMPE MARCIS M
权利人:POLAROID CORP
摘要:In one aspect, this invention relates to a method of synthesizing certain 3-(4'-OP-carbocyclic aryl)-3-(carbocyclic aryl)-2,3-dihydrobenz[d]isothiazole-1,1-dioxides (and -2,3-dihydronaphtho[1,8-de]-1,2-thiazine-1,1-dioxides) by reacting (a) a 3-(4'-OP-carbocyclic aryl)-benz[d]isothiazole-1,1-dioxide wherein P is a protecting group or a 3-(4'-OP-carbocyclic aryl)-naphtho[1,8-de]-1,2-thiazine-1,1-dioxide wherein P is a protecting group and (b) a carbocyclic aryllithium compound to give (c) the corresponding 3-(4'-OP-carbocyclic aryl)-3-(carbocyclic aryl)-2,3-dihydrobenz[d]-isothiazole-1,1-dioxide or the corresponding 3-(4'-OP-carbocyclic aryl)-3-(carbocyclic aryl)-2,3-dihydronaphtho-[1,8-de]-1,2-thiazine-1,1-dioxide. In another aspect, the present invention relates to the 3,3-disubstituted-2,3-dihydrobenz[d]isothiazole-1,1-dioxides and the 3,3-disubstituted-2,3-dihydronaphtho[1,8-de]-1,2-thiazine-1,1-dioxides produced by the above-described method provided the 3,3 substituents are different, which compounds are useful in the synthesis of phenol and 1-naphthol sulfam(na)phthaleins employed, for example, as photographic optical filter agents and filter agent precursors.