CAS: 3853-88-1; Cis-Endo-Bicyclo[2.2.1]Hept-5-Ene-2,3-Dicarboxylic Acid

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85-39-2 1200-88-0 3813-52-3

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3,6-Endomethylene-1,2,3,6-Tetrahydrophthalic Anhydride置于水体系中,用86%的收率获得产物5-降冰片烯-2,3-二羧酸
参考文献:使用烯烃和炔烃的复分解反应合成环状和大环醚
标题:使用烯烃和炔烃的复分解反应合成环状和大环醚
摘要:研发了带有烯丙基和/或炔丙基醚取代基的环己烷和环己烯的复分解转化.使用第一代和第二代明确定义的亚烷基钌催化剂获得了一系列含有稠合 6,8-双环系统的产物,这些产物由烯烃和/或烯炔复分解产生.然而,无应变的环己烯单元不参与任何这些复分解过程,即使这样做会导致热力学更稳定的产品.这与之前对类似化合物和相应的氨基取代环己烯的结果形成对比.还报道了通过涉及合适环己烯醚侧链的复分解过程合成二烯和二氢呋喃.当无应变的环己烯单元被降冰片烯基团取代时,紧张的烯烃确实参与了烯烃和烯炔复分解的级联反应.这种化学反应扩展到环己烯和降冰片烯酯的炔烃复分解反应,产生 6,12-稠合的环炔烃,随后将进行进一步的烯炔和/或烯烃复分解反应.这最终导致了第一个单锅复分解过程的发展,在该过程中,由两种不同催化剂引发的炔烃,烯炔和烯烃复分解反应依次发生,形成 5,12-稠合双环二烯产物.(© Wiley-Vch Verlag
DOI:10.1002/ejoc.200700291

专利信息

专利号:US-5041527-A
优先权日:1988-05-16
标题 :Dimer for synthesis of high performance polymer matrix composites
发明人：RIEL FRANK J; VUONG TUYET T
权利人:ROHR INDUSTRIES INC
摘要:An improved synthesis for PMR-type polyimides, including first preparing a dimer of 5-norbornene-2,3-dicarboxylic acid, or acid ester or anhydride and 4,4'-methylenedianiline. This dimer is then reacted with the dimethyl ester of 3,3',4,4'-benzophenonetetracarboxylic acid and 4,4'-methylenedianiline. The resulting polyimide prepolymer exhibits superior physical properties and is substantially free of the undesired trimer of 5-norbornene-2,3-dicarboxylic acid, or acid ester or anhydride and 4,4'-methylenedianiline.

专利号:US-5041528-A
优先权日:1989-07-25
标 题 :New dimer for synthesis of high performance polymer matrix composites
发明人：RIEL FRANK J; VUONG TUYET; DELANEY EDWARD A
权利人:ROHR INDUSTRIES INC
摘要:An improved synthesis for PMR-type polyimides, including first preparing a dimer of 5-norbornene-2,3-dicarboxylic acid, or acid ester or anhydride and 4,4'methylenedianiline. This dimer is then reacted with the reaction product of the dimethyl ester (or dianhydride) of 3,3', 4,4'-benzophenonetetracarboxylic acid and 4,4'-methylenedianiline. The resulting polyimide prepolymer exhibits superior physical properties and is substantially free of the undesired trimer of 5-norbornene-2,3-dicarboxylic acid, or acid ester or anhydride and 4,4'-methylenedianiline. When this dimer is reacted with 3,3', 4,4'-benzophenonetetracarboxylic acid dianhydride methylenedianiline amic acid mixture, the resulting polyimide prepolymer exhibits superior physical properties.

专利号:US-5041526-A
优先权日:1988-05-16
标 题:Dimer for synthesis of high performance polymer matrix composites
发明人：RIEL FRANK J; VUONG TUYET; DELANEY EDWARD A
权利人:ROHR INDUSTRIES INC
摘要:An improved synthesis for PMR-type polyimides, including first preparing a dimer of 5-norbornene-2,3-dicarboxylic acid, or acid ester or anhydride and 4,4'methylene dianiline. This dimer is then reacted with one of the following: n 1. the reaction product of a primary aromatic diamine and an aromatic dianhydride. n 2. an aromatic dianhydride. n 3. a mixture of a primary aromatic diamine and an aromatic dianhydride, or an ester of an aromatic tetraacid or an aromatic tetraacid. n The resulting polyimide prepolymer exhibits superior physical properties and is substantially free of undesired impurities and unreacted 4,4'-methylene dianiline.

专利号:WO-8503665-A1
优先权日:1984-02-15
标题:Synthesis of polyurethane products
发明人：HOSTETTLER FRITZ
权利人:PIRRI JAQUELYN P; HOSTETTLER FRITZ
摘要:Wide range of polyurethane products, e.g., cellular, dense elastomer, and integral skin microcellular products, obtained by the reaction of (a) a polyisocyanate compound, (b) a polyol, (c) optionally a chain extender and/or blowing agent with/without other known additives, (d) in the presence of a nonhydroxyl flow modifier characterized by carbon and hydrogen atoms, at least one and, generally, a plurality of oxyalkylene groups, and at least one urethane, $(1,5)omicronp. Several of the polyurethane products exhibit unique properties, e.g., foamed articles with capability to conduct static electricity, soft elastomers characterized by improved coefficient of friction, etc. Several classes of the flow modifiers are novel per se. The polyurethane products can be synthesized via the one shot or prepolymer process. Multipackage systems, in particular, two and three component systems are useful in molding operations, e.g., manufacture of shoe soles.

专利号:US-4348536-A
优先权日:1975-05-28
标 题 :Odorless catalysts for the synthesis of polyurethanes
发明人：BLAHAK JOHANNES; HUEBNER HANS; KOSTER JOHANNES; MEINERS HANS J; THOMAS HEINZ
权利人:BAYER AG
摘要:The instant invention is directed to novel compounds and the use thereof in producing polyurethane resins. The compounds generally correspond to the following formula: wherein n is an integer of from 1 to 5, R is a C1-C5 alkyl group Y is a C1-C5 alkyl group or a and Z is a where n=0 or 1, X is -O- or and R' is an aliphatic group having from 1 to 15 carbon atoms and may contain ester, ether, or amide groups or tertiary nitrogen and, when m=0, R' may be a hydrogen atom.

专利号:US-2009111737-A1
优先权日:1999-05-24
标题:Novel antibacterial agents
发明人：CHRISTENSEN BURTON G; MORAN EDMUND J; GRIFFIN JOHN H; JUDICE J KEVIN; MU YONGQI; PACE JOHN L; MAMMEN MATHAI; AGGEN JAMES
权利人:CHRISTENSEN BURTON G; MORAN EDMUND J; GRIFFIN JOHN H; JUDICE J KEVIN; MU YONGQI; PACE JOHN L; MAMMEN MATHAI; AGGEN JAMES
摘要:This invention relates to novel multibinding compounds (agents) that are antibacterial agents. The multibinding compounds of the invention comprise from 2-10 ligands covalently connected by a linker or linkers, wherein each of said ligands in their monovalent (i.e., unlinked) state have the ability to bind to a an enzyme involved in cell wall biosynthesis and metabolism, a precursor used in the synthesis of the bacterial cell wall and/or the bacterial cell surface thereby interfere with the synthesis and/or metabolism of the cell wall. In particular the multibinding compounds of the invention comprise from 2-10 ligands covalently connected by a linker or linkers, wherein each of said ligands hasn a ligand domain capable of binding to penicillin binding proteins, a transpeptidase enzyme, a substrate of a transpeptidase enzyme, a beta-lactamase enzyme, pencillinase enzyme, cephalosporinase enzyme, a transglycoslase enzyme, or a transglycosylase enzyme substrate; Preferably, the ligands are selected from the beta lactam or glycopeptide class of antibacterial agents.