CAS: 3988-03-2; 4,4'-Dibromobenzophenone

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CAS号589-87-7 对溴碘苯 | CAS号201230-82-2 carbon monoxide | CAS号148651-39-2 4-溴苯基碘化锌 | CAS号1941-86-2 Benzene, 1,1-me... | CAS号107-08-4 1-碘丙烷 | CAS号29334-18-7 4,4'-DIBROMOBEN... | CAS号108-86-1 溴苯 | CAS号586-75-4 4-溴苯甲酰氯 | CAS号50794-50-8 4,5-dihydroxy-2... | CAS号500790-39-6 1,1,1-tribromo-... | CAS号10605-45-5 4-[1-(4-cyanoph... | CAS号3478-90-8 4,4'-二苯基苯甲酮 | CAS号32446-66-5 4,4'-二氰基二苯甲酮 | CAS号1941-86-2 Benzene, 1,1-me... | CAS号196091-06-2 bis[4-(4-propan... | CAS号90-98-2 4,4'-二氯二苯甲酮 | CAS号345-92-6 4,4'-二氟二苯甲酮 | CAS号26957-40-4 Benzene,1,1'-(2... | CAS号964-68-1 二苯甲酮-4,4'-二甲酸 | CAS号14984-21-5 4,4'-二苯氧基二苯甲酮

二(4-溴苯基)甲醇置于pyridinium Chlorochromate体系中,用 二氯甲烷 作为反应溶剂,以95%的收率获得产物4,4'-二溴二苯甲酮
参考文献:电子因素对邻类喹啉反应性中间体的光谱动力学性质的调节:时间分辨激光闪光和光致变色6-芳基和7-芳基二甲基苯酮的稳态光解研究
标题:电子因素对邻类喹啉反应性中间体的光谱动力学性质的调节:时间分辨激光闪光和光致变色6-芳基和7-芳基二甲基苯酮的稳态光解研究
摘要:多种的不同取代的6-和7-Arylchromenes如所描绘离岗光敏反应ç  O键裂解以产生有色ö-Quinonoid中间体.对μs-ms(激光闪光)和实时动力学数据的综合分析表明,当c2-芳基和c6-/ C7-芳基环分别包含给电子基团和电子接受基团时,邻醌类中间体的衰减更快.类似地,在相反的情况下,衰变缓慢发生,而当两个取代基都是给电子体时,观测到中等的衰变速率.
DOI:10.1002/chem.200801925

专利信息

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.

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