利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

4 条记录 (耗时 0.02 秒)

    Intermediates in the synthesis of camptothecin and related compounds and synthesis thereof
    3.
    发明授权
    Intermediates in the synthesis of camptothecin and related compounds and synthesis thereof 失效
    中间体合成喜树碱及相关化合物及其合成

    公开(公告)号：US06211371B1

    公开(公告)日：2001-04-03

    申请号：US09007872

    申请日：1998-01-15

    申请人： Dennis P. Curran ,  Hubert Josien ,  Sung Bo Ko

    发明人： Dennis P. Curran ,  Hubert Josien ,  Sung Bo Ko

    IPC分类号： C07D49122

    CPC分类号： C07D471/14 ,  C07F7/0812 ,  C07F7/083 ,  Y02P20/582

    摘要： A method of synthesizing compounds having the formula via a 4+1 radical annulation/cyclization wherein the precursor is reacted with an aryl isonitrile having the formula wherein X is selected from the group consisting of Br and I, ≡Y is ≡N or ≡C—R3, R1, R2, and R6 are independently hydrogen, a normal alkyl group, a branched alkyl group, an allyl group, a benzyl group, an alkynyl group, a propargyl group, an alkoxyl group, a halogen group, a trialkylsilyl group, an amino group, an alkyl amino group, a dialkylamino group, an aminoalkyl group, a cyano group, or R16CO—, wherein R16 is an alkyl group, an alkoxyl group, or an amino group, R3 is hydrogen, a normal alkyl group, a branched alkyl group, an allyl group, a benzyl group, an alkynyl group, a propargyl group, an alkoxyl group, a halogen group, a trialkylsilyl group, an amino group, an alkyl amino group, a dialkylamino group, an aminoalkyl group, a cyano group, or R16CO—, wherein R16 is an alkyl group, an alkoxyl group, or an amino group, R4 is an alkyl group, an allyl group, a propargyl group or a benzyl group and R15 is hydrogen.

    摘要翻译： 合成具有4 + 1自由基环化/环化的化合物的方法，其中前体与具有式（Ⅳ）的芳基异腈反应选自Br和I，= Y = N或= C-R 3， R1，R2和R6独立地为氢，正烷基，支链烷基，烯丙基，苄基，炔基，炔丙基，烷氧基，卤素基，三烷基甲硅烷基，氨基 基团，烷基氨基，二烷基氨基，氨基烷基，氰基或R 16 CO-，其中R 16是烷基，烷氧基或氨基，R 3是氢，正烷基，支链 烷基，烯丙基，苄基，炔基，炔丙基，烷氧基，卤素基，三烷基甲硅烷基，氨基，烷基氨基，二烷基氨基，氨基烷基，氰基 基团或R 16 CO-，其中R 16是烷基，烷氧基或氨基 p，R4是烷基，烯丙基，炔丙基或苄基，R15是氢。

    ARYLPHENOXY CATALYST SYSTEM FOR PRODUCING ETHYLENE HOMOPOLYMER OR COPOLYMERS OF ETHYLENE AND a-OLEFINS
    4.
    发明申请
    ARYLPHENOXY CATALYST SYSTEM FOR PRODUCING ETHYLENE HOMOPOLYMER OR COPOLYMERS OF ETHYLENE AND a-OLEFINS 有权
    用于生产乙烯和乙烯的乙烯共聚物或共聚物的芳氧基催化剂体系

    公开(公告)号：US20090326175A1

    公开(公告)日：2009-12-31

    申请号：US12533816

    申请日：2009-07-31

    申请人： Tae Woo Woo ,  Myung Ahn Ok ,  Jong Sok Hahn ,  Mal Ou Lee ,  Sang Ook Kang ,  Sung Bo Ko ,  Tae Jin Kim ,  Sung Kwan Kim

    发明人： Tae Woo Woo ,  Myung Ahn Ok ,  Jong Sok Hahn ,  Mal Ou Lee ,  Sang Ook Kang ,  Sung Bo Ko ,  Tae Jin Kim ,  Sung Kwan Kim

    IPC分类号： C08F4/76 ,  C07F7/00

    CPC分类号： C07F17/00 ,  C08F4/65908 ,  C08F4/65912 ,  C08F10/00 ,  C08F110/02 ,  C08F210/16 ,  C08F2420/03 ,  C08F4/6592 ,  C08F2500/12 ,  C08F210/14

    摘要： The present invention relates to an arylphenoxy catalyst system producing an ethylene homopolymer or copolymers of ethylene and α-olefins, and a method of producing an ethylene homopolymer or copolymers of ethylene and α-olefins having a high molecular weight under a high temperature solution polymerization condition using the same. The catalyst system includes a group IV arylphenoxy-based transition metal catalyst and an aluminoxane cocatalyst or a boron compound cocatalyst. In the transition metal catalyst, a cyclopentadiene derivative and arylphenoxide as fixed ligands are located around the group IV transition metal, arylphenoxide is substituted with at least one aryl derivative and is located at the ortho position thereof, and the ligands are not crosslinked to each other. The catalyst includes an environmentally-friendly raw material, synthesis of the catalyst is economical, and thermal stability of the catalyst is excellent. It is useful for producing an ethylene homopolymer or copolymers of ethylene and α-olefins having various physical properties in commercial polymerization processes.

    摘要翻译： 本发明涉及一种生产乙烯均聚物或乙烯与α-烯烃的共聚物的芳基苯氧基催化剂体系，以及在高温溶液聚合条件下生产具有高分子量的乙烯均聚物或乙烯与α-烯烃的共聚物的方法 使用相同 催化剂体系包括IV族芳基苯氧基基过渡金属催化剂和铝氧烷助催化剂或硼化合物助催化剂。 在过渡金属催化剂中，作为固定配体的环戊二烯衍生物和芳基苯氧基位于IV族过渡金属周围，芳基酚被至少一个芳基衍生物取代，位于其邻位，配体彼此不交联 。 该催化剂包括环保原料，催化剂的合成是经济的，催化剂的热稳定性优异。 在商业聚合方法中生产具有各种物理性质的乙烯均聚物或乙烯和α-烯烃的共聚物是有用的。