CHELATING CARBENE LIGAND PRECURSORS AND THEIR USE IN THE SYNTHESIS OF METATHESIS CATALYSTS
    2.
    发明申请
    CHELATING CARBENE LIGAND PRECURSORS AND THEIR USE IN THE SYNTHESIS OF METATHESIS CATALYSTS 审中-公开
    卡特彼勒前驱剂及其在合成催化剂合成中的应用

    公开(公告)号:US20110112319A1

    公开(公告)日:2011-05-12

    申请号:US12912723

    申请日:2010-10-26

    IPC分类号: C07F15/00

    摘要: Chelating ligand precursors for the preparation of olefin methathesis catalysts are disclosed. The resulting catalysts are air stable monomeric species capable of promoting various methathesis reactions efficiently, which can be recovered from the reaction mixture and reused. Internal olefin compounds, specifically beta-substituted styrenes, are used as ligand precursors. Compared to terminal olefin compounds such as unsubstituted styrenes, the beta-substituted styrenes are easier and less costly to prepare, and more stable since they are less prone to spontaneous polymerization. Methods of preparing chelating-carbene methathesis catalysts without the use of CuCl are disclosed. This eliminates the need for CuCl by replacing it with organic acids, mineral acids, mild oxidants or even water, resulting in high yields of Hoveyda-type methathesis catalysts. The invention provides an efficient method for preparing chelating-carbene metathesis catalysts by reacting a suitable ruthenium complex in high concentrations of the ligand precursors followed by crystallization from an organic solvent.

    摘要翻译: 公开了用于制备烯烃复合催化剂的螯合配体前体。 得到的催化剂是能够有效促进各种复合反应的空气稳定的单体物质,其可以从反应混合物中回收并重复使用。 使用内部烯烃化合物,特别是β-取代的苯乙烯作为配体前体。 与末端烯烃化合物如未取代的苯乙烯相比,β-取代的苯乙烯更容易制备成本更低,更稳定,因为它们不易于自发聚合。 公开了不使用CuCl制备螯合 - 卡宾络合催化剂的方法。 这通过用有机酸,无机酸,温和氧化剂甚至水代替它来消除对CuCl的需要,导致Hoveyda型复分解催化剂的高产率。 本发明提供了一种制备螯合碳烯复分解催化剂的有效方法,该方法是通过在高浓度配体前体中合适的钌络合物,然后从有机溶剂中结晶而制备。

    Synthesis of Terminal Alkenes From Internal Alkenes Via Olefin Metathesis
    3.
    发明申请
    Synthesis of Terminal Alkenes From Internal Alkenes Via Olefin Metathesis 有权
    通过烯烃复分解从内部烯烃合成末端烯烃

    公开(公告)号:US20100145086A1

    公开(公告)日:2010-06-10

    申请号:US12445000

    申请日:2007-10-15

    IPC分类号: C11B3/02

    摘要: This disclosure relates generally to olefin metathesis, and more particularly relates to the synthesis of terminal alkenes from internal alkenes using a cross-metathesis reaction catalyzed by an olefin metathesis catalyst. According to one aspect, for example, a method is provided for synthesizing a terminal olefin, the method comprising contacting, in the presence of a ruthenium alkylidene metathesis catalyst, an olefinic substrate comprised of at least one internal olefin with a cross metathesis partner comprised of an alpha olefinic reactant, under reaction conditions effective to allow cross-metathesis to occur, wherein the reaction conditions include a reaction temperature of at least 35° C. The methods, compositions, reactions and reaction systems herein disclosed have utility in the fields of catalysis, organic synthesis, and industrial chemistry.

    摘要翻译: 本公开一般涉及烯烃复分解,更具体地涉及使用由烯烃复分解催化剂催化的交叉复分解反应从内部烯烃合成末端烯烃。 根据一个方面,例如,提供了一种用于合成末端烯烃的方法,所述方法包括在钌亚烷基复分解催化剂存在下使由至少一种内烯烃组成的烯属基材与由 在有效允许发生交叉复分解的反应条件下,α烯烃反应物,其中反应条件包括至少35℃的反应温度。本文公开的方法,组合物,反应和反应系统可用于催化领域 ,有机合成和工业化学。

    Chelating carbene ligand precursors and their use in the synthesis of metathesis catalysts
    4.
    发明授权
    Chelating carbene ligand precursors and their use in the synthesis of metathesis catalysts 有权
    螯合卡宾配体前体及其在复分解催化剂合成中的应用

    公开(公告)号:US06620955B1

    公开(公告)日:2003-09-16

    申请号:US10295773

    申请日:2002-11-15

    IPC分类号: C07F1500

    摘要: Chelating ligand precursors for the preparation of olefin metathesis catalysts are disclosed. The resulting catalysts are air stable monomeric species capable of promoting various metathesis reactions efficiently, which can be recovered from the reaction mixture and reused. Internal olefin compounds, specifically beta-substituted styrenes, are used as ligand precursors. Compared to terminal olefin compounds such as unsubstituted styrenes, the beta-substituted styrenes are easier and less costly to prepare, and more stable since they are less prone to spontaneous polymerization. Methods of preparing chelating-carbene metathesis catalysts without the use of CuCl are disclosed. This eliminates the need for CuCl by replacing it with organic acids, mineral acids, mild oxidants or even water, resulting in high yields of Hoveyda-type metathesis catalysts. The invention provides an efficient method for preparing chelating-carbene metathesis catalysts by reacting a suitable ruthenium complex in high concentrations of the ligand precursors followed by crystallization from an organic solvent.

    摘要翻译: 公开了用于制备烯烃复分解催化剂的螯合配体前体。 所得催化剂是能够有效促进各种复分解反应的空气稳定的单体物质,其可以从反应混合物中回收并重复使用。 使用内部烯烃化合物,特别是β-取代的苯乙烯作为配体前体。 与末端烯烃化合物如未取代的苯乙烯相比,β-取代的苯乙烯更容易制备成本更低,更稳定,因为它们不易于自发聚合。 公开了不使用CuCl制备螯合 - 碳烯复分解催化剂的方法。 这通过用有机酸,无机酸,温和氧化剂甚至水代替它来消除对CuCl的需要,导致Hoveyda型复分解催化剂的高产率。 本发明提供了一种制备螯合碳烯复分解催化剂的有效方法,该方法是通过在高浓度配体前体中合适的钌络合物,然后从有机溶剂中结晶而制备。

    Covalent microparticle-drug conjugates for biological targeting

    公开(公告)号:US06455073B1

    公开(公告)日:2002-09-24

    申请号:US09612732

    申请日:2000-07-10

    IPC分类号: A61K914

    摘要: This invention provides reagents and methods for specifically delivering antibiotic, antimicrobial and antiviral compounds, drugs and agents to phagocytic mammalian cells. The invention also relates to specific delivery to and uptake of such compounds by phagocytic cells. The invention specifically relates to reagents and methods for facilitating the entry of antibiotic, antimicrobial and antiviral compounds, drugs and agents into phagocytic cells. The invention specifically provides compositions of matter and pharmaceutical embodiments of such compositions comprising such antibiotic, antimicrobial or antiviral compounds, drugs and agents conjugated to, impregnated with or coated onto particulate carriers generally termed microparticles. In particular embodiments, the antibiotic, antimicrobial and antiviral compounds, drugs and agents are covalently linked to a microparticle via a specifically-degradable linker molecule which is the target of a microorganism-specific protein having enzymatic activity. Also provided are porous microparticles impregnated with antibiotic, antimicrobial or antiviral compounds, drugs and agents wherein the surface or outside extent of the microparticle is covered with a degradable coating that is specifically degraded within an infected phagocytic mammalian cell. Also provided are nonporous microparticles coated with antibiotic, antimicrobial or antiviral compounds, drugs and agents and further coated wherein the surface or outside extent of the microparticle is covered with a degradable coating that is specifically degraded within an infected phagocytic mammalian cell. Thus, the invention provides cell targeting of drugs wherein the targeted drug is only released in cells infected with a particular microorganism. Methods of inhibiting, attenuating, arresting, combating and overcoming microbial infection of phagocytic mammalian cells in vivo and in vitro, especially cells infected with tuberculosis-causing and other Mycobacterium species microorganisms, are also provided.