溴五氟苯置于正丁基锂体系中,用 乙醚,正己烷,二氯甲烷 用作溶剂,化学反应 26.17H,反应生成三苯碳四(五氟苯基)硼酸盐 参考文献:Competition Between π-Arene And Lone-Pair Halogen Coordination Of Silylium Ions 标题:Competition Between π-Arene And Lone-Pair Halogen Coordination Of Silylium Ions 摘要:In 2,6-Diarylphenylsir(2) Cations,The 2,6-Diarylphenyl (M-Terphenyl) Scaffold Blocks Incoming Nucleophiles And Stabilizes The Positive Charge At Silicon By Lateral Ring Interactions. Direct Ortho-Halogen And Pi-Electron-Rich Face Coordination To Silicon Has Been Seen. For A Series Of Cations Bearing 2,6-Difluoro-2',6'-Dimethyl-X(N)-Substituted Rings,The Relative Contribution Of These Two Modes Of Stabilization Has Been Assessed. Direct Coordination From An Aryl Fluoride Is Found To Be Comparable To That From The Mesityl Pi-Face. Doi:10.1021/ja2040392
专利信息
专利号:US-6121377-A 优先权日:1998-09-10 标题 :Process for the production of thermoplastic elastomeric polyolefin alloys, including syndiotactic-atactic polypropylene alloys and isotactic-atactic polypropylene alloys, and catalysts therefore 发明人:CHIEN JAMES C W 权利人:ACADEMY OF APPLIED SCIENCES; RINES AND RINES 摘要:This invention relates to thermoplastic elastomeric polyolefin alloys (preferably polypropylene alloys) and the processes for preparing naturally compatibilized polyolefin alloys using a 'one-pot' polymerization of a single monomer (preferably propylene), whereby two homopolymers having different stereoisomeric structures are produced (preferably stereoregular and stereoirregular), as well as a third block copolymer having alternating sequences of the two structural segments of the two homopolymers; and wherein catalyst compositions are used enabling the direct synthesis of naturally compatibilized polymer blends comprising for components: two organometallic complexes of group IVB elements, a catalyst which irreversibly reacts with at least one ligand on the transition metal complexes converting it to catalytically active state, and a hydrocarbyl, substituted hydrocarbyl, or oxyhydrocarbyl compound of Group IIA, IIB, and IIIA metals, which functions as a cross-over agent.
专利号:US-6124400-A 优先权日:1998-09-10 标 题 :Semicrystalline polymer alloy and process for preparation 发明人:CHIEN JAMES C W 权利人:ACADEMY OF APPLIED SCIENCES 摘要:This invention relates to polymer alloys and the 'one-pot' polymerization process for preparing the same from a single monomer, wherein the product is comprised of two semi-crystalline homopolymers having different micro-structures and a well-defined block copolymer having alternating sequences of the two structural segments of the homopolymers, and with the formed alloy being 'naturally' compatible without the need for thermomechanical mixing or addition of a compatibilizing additive, including the presence of a comonomer and formed with catalyst compositions enabling the direct synthesis of 'naturally' compatibilized polymer alloy that combines four components: two components being organometallic complexes of Group IVB or VIII elements, a third component being a cocatalyst which irreversibly reacts with at least one nonhapto ligand on the transition metal complex, and a fourth component that is a cross-over agent selected from the group of hydrocarbyl or substituted hydrocarbyl compound of Group IIA, IIB or IIIA elements.
专利号:US-9932423-B2 优先权日:2015-09-24 标题:Hydrogenation of annulated cyclopentadienyl metal complexes and metallocene catalysts comprising such 发明人:MCCULLOUGH LAUGHLIN G 权利人:EXXONMOBIL CHEMICAL PATENTS INC 摘要:Disclosed are methods for making partially hydrogenated annulated cyclopentadienyl complexes which can provide efficient synthesis of metallocene catalysts desired for olefin polymerization.
专利号:US-8168556-B2 优先权日:2007-10-25 标 题 :Racemoselective synthesis of ansa-metallocene compounds, ansa-metallocene compounds, catalysts comprising them, process for producing an olefin polymer by use of the catalysts, and olefin homo- and copolymers 发明人:SCHULTE JOERG; SELL THORSTEN; THORN MATTHEW GRANT; WINTER ANDREAS; DIMESKA ANITA 权利人:SCHULTE JOERG; SELL THORSTEN; THORN MATTHEW GRANT; WINTER ANDREAS; DIMESKA ANITA; LUMMUS NOVOLEN TECHNOLOGY GMBH 摘要:A metallocene compound with the 4- and 7-positions on the indenyl moiety possessing large aromatic substituents is prepared in accordance with a method which produces substantially 100 percent racemic isomer. Advantageously, polymerization catalysts including the metallocene of the invention provide superior olefin polymerization results.
专利号:US-2004241251-A1 优先权日:2001-05-04 标 题:Random or block co-or terpolymers produced by using of metal complex catalysts 发明人:THIELE SVEN K H; MONROY VICTOR M; WILSON DAVID R 摘要:Random or block co- or terpolymers produced by using metal complex catalysts in a reaction of one conjugated diene monomer with one aromatic Random or block co- or terpolymers produced by using metomers with one aromatic α-olefin or terpolymers of one conjugated diene monomer with one aromatic α-olefin and one aliphatic α-olefin by using metal complexes comprising metals of group 3 to 10 of the Periodic System of the Elements in combination with activators and optionally a support material. More particularly the metal complexes used for the synthesis of co- or terpolymer are lanthanide metals. Even more particularly diene monomer(s) and aromatic α-olefin monomer(s) such as, but not limited to, butadiene and styrene or isoprene and styrene are copolymerized giving random or block copolymers or butadiene, styrene and isoprene are terpolymerized giving random or block terpolymers using metal complexes comprising lanthanide metals in combination with activators and optionally a support material. Preferably random co- or terpolymers are formed.
专利号:US-9663594-B2 优先权日:2014-05-15 标 题 :Synthesis of aryl coupled bis phenoxides and their use in olefin polymerization catalyst systems with activator-supports 发明人:HLAVINKA MARK L 权利人:CHEVRON PHILLIPS CHEMICAL CO LP; CHEVRON PHILIPS CHEMICAL COMPANY LP 摘要:Disclosed herein are methods of making bis(phenol) ligand compounds and transition metal bis(phenolate) compounds. The transition metal bis(phenolate) compounds can be used as components in catalyst systems for the polymerization of olefins.