CAS: 4519-17-9; 1,4-Bis(Dimethyl(Vinyl)Silyl)Benzene

上下游产品

Chlorodimethylvinylsilane 1.4-dibromobenzene 1,4-bis(dimethylchlorosilyl)benzene vinyl magnesium bromide 1,4-bis{[(E)-2-(1',3',2'-dioxaborinan-2'-yl)ethen-1-yl]dimethylsilyl}benzene 1-[(1-heptynyl)dimethylsilyl]-4-(dimethylvinylsilyl)benzene 1-{[(triethylsilyl)ethynyl]dimethylsilyl}-4-(dimethylvinylsilyl)benzene 1,4-Bis-(dimethyl-triethylsilanylethynyl-silanyl)-benzene

二甲基乙烯基氯硅烷,1,4-Di(Trifluoromethanesulfonyloxy)Benzene置于锰,5 5'-二甲基-2,2'-二吡啶,Nickel Dichloride体系中,用 N,N-二甲基甲酰胺 作为反应溶剂,化学反应 24.0H,以84%的收率获得产物1,4-双(乙烯基二甲基硅烷基)苯
参考文献:乙烯基氯硅烷的跨亲电csp2-Si偶联.
标题:乙烯基氯硅烷的跨亲电csp2-Si偶联.
摘要:亲电子交联已成为形成c-C键的有力工具,但其锻造c-Si键的潜力仍未得到开发.在这里,我们报告了乙烯基/芳基亲电体与乙烯基氯硅烷的交叉亲电体csp 2-Si偶联反应.该新方案提供了一种从容易获得的材料中轻松,精确地合成具有高分子多样性和复杂性的有机硅烷的方法.反应在温和和非碱性条件下进行,这表明该方法具有较高的步骤经济性,广泛的底物范围,广泛的功能公差和易于扩展的特性.该方法的综合实用性通过有效利用硅生物等排体,新型bcb单体的设计以及对乙烯基硅烷产品的hiyama交叉偶联的研究而得以展示.
DOI:10.1002/anie.202010737

专利信息

专利号:US-11767388-B1
优先权日:2019-09-18
标 题 :Silicon-functionalized rubber
发明人：ENSIGN SETH CODY; VIELHABER MARGARET FLOOK; JOHNGRASS JENA LYNN; MA LIQING
权利人:GOODYEAR TIRE & RUBBER
摘要:The compatibility between silica fillers and synthetic rubbers which are synthesized utilizing lanthanide-based catalyst systems, such as neodymium catalyst systems can be improved by terminating the polymerization with a vinyl silane terminating agent. In doing so the vinyl silane is allowed to react with the polymer chain ends of the neodymium rubber to functionalize the chain ends of the polymer chains with silicon containing groups. This results in the rubber having better characteristics for utilization in tire rubber formulations, such a tire tread formulations, that exhibit improved wear characteristics and lower rolling resistance. The process for the synthesis of such functionalized polydiene rubber comprises (1) polymerizing a diene monomer in the presence of a lanthanide-based catalyst system, and (2) terminating the polymerization with a vinyl silane terminator. The functionalized polydiene rubber composition made by this method is comprised of a polydiene rubber which is functionalized at its chain ends with a silicon containing group.