知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

97 条记录 (耗时 0.018 秒)

    High activity metal carbene metathesis catalysts generated using a thermally activated N-heterocyclic carbene precursor
    93.
    发明申请
    High activity metal carbene metathesis catalysts generated using a thermally activated N-heterocyclic carbene precursor 审中-公开
    使用热活化的N-杂环卡宾前体产生的高活性金属卡宾复分解催化剂

    公开(公告)号：US20030083445A1

    公开(公告)日：2003-05-01

    申请号：US10138188

    申请日：2002-05-03

    发明人： Robert H. Grubbs ,  Jason L. Moore ,  John P. Morgan ,  Andrew Bell

    IPC分类号： C08F004/44 ,  C07D233/02

    CPC分类号： C08G61/06 ,  B01J23/462 ,  B01J23/466 ,  B01J31/2265 ,  B01J31/2273 ,  B01J31/24 ,  B01J31/2404 ,  B01J31/28 ,  B01J2231/543 ,  B01J2531/821 ,  B01J2531/825 ,  C07C6/04 ,  C07C6/06 ,  C07C2531/22 ,  C07F15/002 ,  C07F15/0046

    摘要： The invention provides a method for converting a less active or slower to initiate system to a higher activity system so that at the end of a polymerization the most active species is present in the system. The invention generally relates to a process for converting a less active or slower to initiate catalyst system to a higher activity catalyst system wherein the process comprises contacting a protected N-heterocyclic carbene with a metathesis catalyst and an olefin in the presence of energy. One of the benefits of the invention is that the amount of catalyst required is less than or lowered in the presence of the protected N-heterocyclic carbene as compared to the amount of catalyst required in the absence of the protected N-heterocyclic carbene. The protected N-heterocyclic carbene can be unsaturated or saturated. In addition, the invention describes novel ruthenium initiators and methods of making the same.

    摘要翻译： 本发明提供了一种将较少活性或较慢的引发体系转化为较高活性体系的方法，使得在聚合结束时，最活泼的物质存在于体系中。 本发明一般涉及将较不活泼或较慢的引发催化剂体系转化为较高活性的催化剂体系的方法，其中该方法包括在能量存在下使受保护的N-杂环卡宾与易位催化剂和烯烃接触。 本发明的优点之一是与不存在受保护的N-杂环卡宾所需的催化剂的量相比，在保护的N-杂环卡宾的存在下所需的催化剂的量小于或降低。 受保护的N-杂环卡宾可以是不饱和的或饱和的。 此外，本发明描述了新颖的钌引发剂及其制备方法。

    Hexacoordinated ruthenium or osmium metal carbene metathesis catalysts
    95.
    发明申请
    Hexacoordinated ruthenium or osmium metal carbene metathesis catalysts 有权
    六配位钌或锇金属卡宾复分解催化剂

    公开(公告)号：US20030069374A1

    公开(公告)日：2003-04-10

    申请号：US10172765

    申请日：2002-06-14

    申请人： California Institute of Technology and Cymetech, LLP

    发明人： Robert H. Grubbs ,  Melanie S. Sanford ,  Jason L. Moore ,  Jennifer A. Love ,  Tina M. Trnka

    IPC分类号： C08F004/80 ,  C07F015/00

    CPC分类号： C07C6/04 ,  B01J23/462 ,  B01J23/466 ,  B01J31/181 ,  B01J31/1815 ,  B01J31/182 ,  B01J31/1825 ,  B01J31/183 ,  B01J31/2273 ,  B01J31/28 ,  B01J2231/14 ,  B01J2231/543 ,  B01J2531/821 ,  B01J2531/825 ,  C07C6/06 ,  C07C2531/22 ,  C07F15/002 ,  C07F15/0046 ,  C08G61/06

    摘要： The present invention relates to novel hexacoordinated metathesis catalysts and to methods for making and using the same. The inventive catalysts are of the formula 1 wherein: M is ruthenium or osmium; X and X1 are the same or different and are each independently an anionic ligand; L, L1null and L2 are the same or different and are each independently a neutral electron donor ligand; and, R and R1 are each independently hydrogen or a substituent selected from the group consisting of C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, aryl, C1-C20 carboxylate, C1-C20 alkoxy, C2-C20 alkenyloxy, C2-C20 alkynyloxy, aryloxy, C2-C20 alkoxycarbonyl, C1-C20 alkylthio, C1-C20 alkylsulfonyl and C1-C20 alkylsulfinyl and silyl. Optionally, each of the R or R1 substituent group may be substituted with one or more moieties selected from the group consisting of C1-C10 alkyl, C1-C10 alkoxy, and aryl which in turn may each be further substituted with one or more groups selected from a halogen, a C1-C5 alkyl, C1-C5 alkoxy, and phenyl. Moreover, any of the catalyst ligands may further include one or more functional groups. Examples of suitable functional groups include but are not limited to: hydroxyl, thiol, thioether, ketone, aldehyde, ester, ether, amine, imine, amide, nitro, carboxylic acid, disulfide, carbonate, isocyanate, carbodiimide, carboalkoxy, carbamate, halogen, alcohol, sulfonic acid, phosphine, imide, acetal, ketal, boronate, cyano, cyanohydrin, hydrazine, enamine, sulfone, sulfide, and sulfenyl. In certain embodiments, at least one of L, L1null and L2 is an N-heterocyclic carbene ligand.

    摘要翻译： 本发明涉及新型六配位复分解催化剂及其制备和使用方法。 本发明的催化剂具有下式：其中：M是钌或锇; X和X 1相同或不同，各自独立地为阴离子配体; L，L 1和L 2相同或不同，各自独立地为中性给电子体配体; 和R 1和R 2各自独立地为氢或选自C 1 -C 20烷基，C 2 -C 20烯基，C 2 -C 20炔基，芳基，C 1 -C 20羧酸酯，C 1 -C 20烷氧基， C20链烯氧基，C2-C20炔氧基，芳氧基，C2-C20烷氧基羰基，C1-C20烷硫基，C1-C20烷基磺酰基和C1-C20烷基亚磺酰基和甲硅烷基。 任选地，R或R ​​1取代基中的每一个可以被一个或多个选自以下的部分取代：C 1 -C 10烷基，C 1 -C 10烷氧基和芳基，其又可以进一步被一个或多个 更多选自卤素，C 1 -C 5烷基，C 1 -C 5烷氧基和苯基的基团。 此外，任何催化剂配体还可以包括一个或多个官能团。 合适的官能团的实例包括但不限于：羟基，硫醇，硫醚，酮，醛，酯，醚，胺，亚胺，酰胺，硝基，羧酸，二硫化物，碳酸酯，异氰酸酯，碳二亚胺，碳烷氧基，氨基甲酸酯，卤素 醇，磺酸，膦，酰亚胺，缩醛，缩酮，硼酸酯，氰基，氰醇，肼，烯胺，砜，硫化物和亚磺酰基。 在某些实施方案中，L，L'和L 2中的至少一个是N-杂环卡宾配体。