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52 条记录 (耗时 0.021 秒)

    VERFAHREN ZUR HERSTELLUNG VON N-BUTYRALDEHYD UND/ODER N-BUTANOL
    32.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON N-BUTYRALDEHYD UND/ODER N-BUTANOL 失效
    用于生产正丁醛和/或正丁醇

    公开(公告)号：EP0778819A1

    公开(公告)日：1997-06-18

    申请号：EP95930520.0

    申请日：1995-08-24

    申请人： BASF AKTIENGESELLSCHAFT

    发明人： KANAND, Jürgen ,  RÖPER, Michael ,  PACIELLO, Rocco ,  THOME, Alfred

    IPC分类号： C07C27 ,  C07B61 ,  C07C29 ,  C07C31 ,  C07C45 ,  C07C47 ,  C07D295

    CPC分类号： C07D295/023 ,  C07C29/00 ,  C07C45/516 ,  C07C45/56 ,  C07C45/562 ,  C07C31/12

    摘要： The proposed process for producing n-butyraldehyde and/or n-butanol involves the following steps: (a) 1,3-butadiene is allowed to react with an amine of formula (I) R1R2NH, in which the groups independently of one another represent hydrogen, optionally substituted aliphatic or cyclo-aliphatic groups, or aryl or aralkyl groups, or are connected to a bridging unit which can contain heteroatoms, at high temperature and pressure and in the presence of a compound of a group VIIIb element, in the presence of an alkali metal amide, or in the presence of a basic metal oxide, to form a mixture of addition compounds of formula (II) and (III); (b) addition compound (III) is isomerised to addition compound (II); (c) addition compound (II) is isomerised in the presence of a homogeneous or heterogeneous transition metal catalyst in liquid phase or in the presence of a heterogeneous catalyst containing transition metal in the gas phase to produce enamine of formula (IV); and (d) the enamine (IV) is converted, by reaction with hydrogen and water, or water, in the presence of a homogeneous or heterogeneous transition metal catalyst in liquid phase, in the presence of a heterogenous catalyst containing transition metal in the gas phase, in the presence of an acid or in the presence of one of the above mentioned catalysts and of an acid, to n-butyraldehyde and/or n-butanol, the amine (I) being released and the released amine (I) being led back into sub-reaction (a).

    A process for preparing chromans
    37.
    发明公开
    A process for preparing chromans 失效
    一种生产苯并二氢吡喃的过程。

    公开(公告)号：EP0065368A1

    公开(公告)日：1982-11-24

    申请号：EP82302189.4

    申请日：1982-04-28

    申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

    发明人： Sakito, Yoji ,  Suzukamo, Gohfu

    IPC分类号： C07D311/72

    CPC分类号： C07D487/04 ,  C07C43/23 ,  C07C45/562 ,  C07C46/02 ,  C07C47/277 ,  C07C50/28 ,  C07D311/72 ,  C07D493/10

    摘要： A process for producing a chroman compound of the formula,
    or an optically active compound thereof

    wherein R 2 , R 3 , and R 4 are each a hydrogen atom or a C 1 -C 4 alkyl group, which comprises reacting a compound of the formula,
    or an optically active compound thereof
    wherein A is an aryl group and Rs is a C 1 -C 4 alkyl group, with a compound of the formula,

    wherein R 1 is a C 1 -C 3 alkyl group, X is a halogen atom and Rz, R 3 and R 4 are as defined above, to obtain a compound of the formula,
    or an optically active compound thereof
    wherein A, R 1 , R 2 , R 3 and R 4 are as defined above, reacting the resulting compound with methylmagnesium halide and then hydrolyzing to obtain a compound of the formula,
    or an optically active compound
    wherein R 1 , R 2 , R 3 and R 4 are as defined above, reducing the resulting compound to obtain a compound of the formula,
    or an optically active compound thereof
    wherein R 1 , R 2 , R 3 and R 4 are as defined above, and then oxidizing the resulting compound to obtain a compound of the formula,
    or an optically active compound thereof
    wherein R 2 , R 3 and R 4 are as defined above, followed by reduction.

    The chroman compounds of this invention are an intermediate for the synthesis of tocopherols, particularly a-tocopherol.

    Optically active or racemic alpha-hydroxyaldehydes and benzyl derivatives thereof
    38.
    发明公开
    Optically active or racemic alpha-hydroxyaldehydes and benzyl derivatives thereof 失效
    α-羟基甲醛在选择性食物中的作用和形式与本发明的苄基衍生物。

    公开(公告)号：EP0050351A1

    公开(公告)日：1982-04-28

    申请号：EP81108506.7

    申请日：1979-11-02

    申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

    发明人： Mukaiyama, Teruaki ,  Sakito, Yoji ,  Asami, Masatoshi

    IPC分类号： C07C47/27 ,  C07C47/19 ,  C07C47/198 ,  C07C47/263 ,  C07C45/56

    CPC分类号： C07D487/04 ,  C07C45/27 ,  C07C45/562 ,  C07C47/263 ,  C07C47/27 ,  C07C47/277

    摘要： An optically active or racemic a-hydroxyaldehyde of formula
    and a compound having a benzyloxy group in place of its hydroxy group, wherein R, represents a C 6 -C 14 aryl group, C 1 -C 10 alkyl group, C 3 -C 10 alkenyl group, C 2 -C 10 alkynyl group, C 7 -C 14 aralkyl group, or a group containing a functional group in the organic portion of said groups, and R 2 represents a C 1 -C 10 alkyl group, C 1 -C 10 alkenyl group, C 2 -C 10 alkynyl group, C 7 -C 14 aralkyl group, C 6 -C 14 aryl group or a group containing a functional group in the organic portion of these groups, R, and R 2 being different groups, is an important intermediate for preparation of pharmaceuticals and agricultural chemicals.

    摘要翻译： 式的光学活性或外消旋α-羟基醛和具有苄氧基的化合物代替其羟基，其中R1表示C6-C14芳基。 C1-C10烷基，C3C10烯基，C2-C10炔基，C7-C14芳烷基或所述基团的有机部分中含有官能团的基团，R2表示C1-C10烷基，C1-C10 烯基，C2-C10炔基，C7-C14芳烷基，C6-C14芳基或这些基团的有机部分中含有官能团的基团，R1和R2是不同的基团，是制备药物的重要中间体 和农药。