Heterocyclic Compound Preparing
    4.
    发明申请
    Heterocyclic Compound Preparing 有权
    杂环化合物制备

    公开(公告)号:US20150315169A1

    公开(公告)日:2015-11-05

    申请号:US14266342

    申请日:2014-04-30

    发明人: Chun Yu HO

    摘要: Disclosed is a process for selectively producing (D+1)-member heterocyclic compounds from corresponding unactivated dienes or derivatives thereof in the presence of a transition metal or lanthanide catalyst or a precursor thereof, relative to D-member heterocyclic rings.

    摘要翻译: 公开了在过渡金属或镧系元素催化剂或其前体相对于D族杂环的存在下,从相应的未活化的二烯或其衍生物中选择性地生产(D + 1) - 元素杂环化合物的方法。

    Reductive method for preparation of macrocyclic oligomer mixtures
    9.
    发明授权
    Reductive method for preparation of macrocyclic oligomer mixtures 失效
    制备大环低聚物混合物的还原法

    公开(公告)号:US5530090A

    公开(公告)日:1996-06-25

    申请号:US419565

    申请日:1995-04-10

    申请人: Farid F. Khouri

    发明人: Farid F. Khouri

    CPC分类号: C08G73/1021 C07B37/10

    摘要: Macrocyclic oligomer mixtures, particularly polyimide oligomer mixtures, are prepared by the treatment of a dihalo-substituted organic compound or the like under reducing conditions, preferably by a complex of a zerovalent Group VIII metal. Cyclization takes place by reductive dehalogenation.

    摘要翻译: 大环低聚物混合物,特别是聚酰亚胺低聚物混合物,通过在还原条件下优选用零价Ⅷ族金属络合物处理二卤代取代的有机化合物等来制备。 通过还原性脱卤进行环化。

    Palladium catalyzed akylative cyclization useful in syntheses of Vitamin
D and analogues
    10.
    发明授权
    Palladium catalyzed akylative cyclization useful in syntheses of Vitamin D and analogues 失效
    钯催化的烷基环化可用于维生素D和类似物的合成

    公开(公告)号:US5446225A

    公开(公告)日:1995-08-29

    申请号:US173172

    申请日:1993-12-23

    摘要: An alkylative cycloaddition method is provided that is particularly useful for the synthesis of many of the Vitamin D analogues with differing side chains. Thus, a preferred synthesis is of Vitamin D analogues having a side chain R.sub.1 where a first precursor having the structure ##STR1## with X being a halide or a pseudo halide, and a second precursor are provided, the second precursor being a 1,7 enyne. These precursors are reacted in the presence of a palladium catalyst to form compounds having the structure ##STR2## where R.sub.2 is hydrogen, hydroxyl, lower alkoxy, fluorine, or a protecting group, and R.sub.3 is hydrogen, hydroxyl, lower alkoxy, fluorine, or a protecting group.

    摘要翻译: 提供了对于合成具有不同侧链的许多维生素D类似物特别有用的烷基环加成方法。 因此,优选的合成是具有侧链R1的维生素D类似物,其中提供具有X为卤化物或假卤化物的结构的第一前体和第二前体,第二前体为1,7 恩乃恩 这些前体在钯催化剂的存在下反应形成具有结构的化合物,其中R2是氢,羟基,低级烷氧基,氟或保护基,R3是氢,羟基,低级烷氧基,氟或 一个保护组。