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85 条记录 (耗时 0.033 秒)

    Preparation of phenylacetaldehydes
    7.
    发明授权
    Preparation of phenylacetaldehydes 失效
    苯乙醛的制备

    公开(公告)号：US4990684A

    公开(公告)日：1991-02-05

    申请号：US378984

    申请日：1989-07-12

    申请人： Wolfgang Hoelderich ,  Norbert Goetz ,  Leopold Hupfer

    发明人： Wolfgang Hoelderich ,  Norbert Goetz ,  Leopold Hupfer

    IPC分类号： C07C45/51 ,  C07C45/52 ,  C07C45/54 ,  C07C45/58

    CPC分类号： C07C45/58 ,  C07C45/512 ,  C07C45/513 ,  C07C45/52 ,  C07C45/54 ,  Y02P20/582

    摘要： Phenylacetaldehydes of the general formula I ##STR1## where each of R.sup.1 to R.sup.5 is independently of the others hydrogen, halogen, unsubstituted or halogen-substituted alkyl, alkenyl, alkoxyl, alkylthio or cycloalkyl, are prepared by converting glycidic esters of the general formula II ##STR2## where each of R.sup.1 to R.sup.5 is as defined above and R.sup.6 is tertbutyl or i-propyl, in the presence of zeolites and/or phosphates and/or phosphoric or boric acid on a carrier material and/or acidic metal oxides as catalysts.

    摘要翻译： 通式Ⅰ（I）的苯基乙醛通过将式（I）的缩水甘油酯转化成其中R1至R5各自独立地为氢，卤素，未取代或卤素取代的烷基，烯基，烷氧基，烷硫基或环烷基， 在载体材料上的沸石和/或磷酸盐和/或磷酸或硼酸存在下，通式II（II）其中R 1至R 5各自如上所定义，R 6为叔丁基或异丙基，和/ 或酸性金属氧化物作为催化剂。

    Conversion of 1,3-dioxanes to 4-oxaaldehydes
    8.
    发明授权
    Conversion of 1,3-dioxanes to 4-oxaaldehydes 失效
    1,3-二恶烷转化为4-氧杂醛

    公开(公告)号：US4939280A

    公开(公告)日：1990-07-03

    申请号：US188416

    申请日：1988-04-29

    申请人： Wolfgang Hoelderich ,  Franz Merger ,  Helmut Lermer

    发明人： Wolfgang Hoelderich ,  Franz Merger ,  Helmut Lermer

    IPC分类号： C07C45/60 ,  C07C47/198 ,  C07C47/277 ,  C07D335/02

    CPC分类号： C07C47/198 ,  C07C45/60 ,  C07C47/277 ,  C07D335/02

    摘要： 4-Oxaaldehydes of the formula ##STR1## are prepared by catalytic isomerization of 1,3-dioxanes by a process in which a 1,3-dioxane of the formula ##STR2## where R.sup.1, R.sup.2, R.sup.4 and R.sup.5 are identical or different and are each hydrogen, a straight-chain or branched alkyl, alkenyl or alkynyl radical of not more than 18 carbon atoms, a cycloalkyl or cycloalkenyl radical of 5 to 8 carbon atoms, an aryl, alkylaryl, aralkyl or alkenylaryl radical of 5 to 16 carbon atoms or a heterocyclic radical, and furthermore R.sup.1 and R.sup.2 and/or R.sup.4 and R.sup.5 together with the carbon atom to which they are bonded may form a cycloalkane, a cycloalkene or a heterocyclic structure, and the stated radicals may furthermore carry substituents which are inert under the reaction conditions, and R.sup.3 is hydrogen or straight-chain or branched alkyl, is isomerized using a phosphate as a catalyst.

    摘要翻译： 通过其中R1，R2，R4和R5相同或不同的式“IMAGE”的1,3-二恶烷的方法，通过1,3-二恶烷的催化异构化制备式“IMAGE”的4-氧代醛， 各自为氢，不超过18个碳原子的直链或支链烷基，烯基或炔基，5至8个碳原子的环烷基或环烯基，5至16个碳的芳基，烷基芳基，芳烷基或烯基芳基 原子或杂环基团，此外，R 1和R 2和/或R 4和R 5与它们所键合的碳原子一起可以形成环烷烃，环烯烃或杂环结构，并且所述基团还可以携带惰性的取代基 在反应条件下，R 3为氢或直链或支链烷基，使用磷酸酯作为催化剂异构化。

    Preparation of pyrroles from dialkoxytetrahydrofurans
    9.
    发明授权
    Preparation of pyrroles from dialkoxytetrahydrofurans 失效
    从二烷氧基四氢呋喃制备吡咯

    公开(公告)号：US4906758A

    公开(公告)日：1990-03-06

    申请号：US231259

    申请日：1988-08-12

    申请人： Wolfgang Hoelderich ,  Michael Hesse ,  Hardo Siegel

    发明人： Wolfgang Hoelderich ,  Michael Hesse ,  Hardo Siegel

    IPC分类号： C07D207/32 ,  C07D207/323 ,  C07B43/04

    CPC分类号： C07D207/323 ,  Y02P20/582

    摘要： Pyrroles of the formula I ##STR1## are prepared by a process in which a dialkoxytetrahydrofuran of the formula II ##STR2## where R.sup.2 to R.sup.5 in the formulae (I) and (II) are identical or different and are each hydrogen, a straight-chain or branched alkyl or alkenyl radical of not more than 12 carbon atoms, a cycloalkyl or cycloalkenyl radical of 5 to 8 carbon atoms, an aryl, alkylaryl or aralkyl radical of 6 to 16 carbon atoms, and two non-adjacent radicals R.sup.6 to R.sup.9 are alkoxy and the other two radicals R.sup.6 to R.sup.9 are hydrogen, is reacted with ammonia or a primary amine H.sub.2 NR.sup.1, where R.sup.1 in formula (I) is hydrogen, alkyl, aryl, alkylaryl, aralkyl or cycloalkyl, in the presence of an acidic, solid, heterogeneous catalyst. Zeolites, for example those of the pentasil type or faujasite type, or phosphates, acidic oxides, phosphoric acid or boric acid on a carrier can be used as the solid heterogeneous catalysts.

    摘要翻译： 式I（I）的吡咯可以通过其中式II（II）的二烷氧基四氢呋喃与式（I）和（II）中的R 2至R 5相同或不同的方法制备， 每个氢，不超过12个碳原子的直链或支链烷基或烯基，5-8个碳原子的环烷基或环烯基，6-16个碳原子的芳基，烷芳基或芳烷基， 相邻的基团R6至R9为烷氧基，另外两个基团R6至R9为氢，与氨或伯胺H 2 N R 1反应，其中式（I）中的R 1为氢，烷基，芳基，烷基芳基，芳烷基或环烷基， 酸性，固体，非均相催化剂的存在。 作为固体多相催化剂，可以使用沸石，例如pentasil类型或八面沸石型沸石，或载体上的磷酸盐，酸性氧化物，磷酸或硼酸。

    Preparation of unsaturated and saturated ketones
    10.
    发明授权
    Preparation of unsaturated and saturated ketones 失效
    不饱和和饱和酮的制备

    公开(公告)号：US4874899A

    公开(公告)日：1989-10-17

    申请号：US206731

    申请日：1988-06-15

    申请人： Wolfgang Hoelderich ,  Leopold Hupfer ,  Kurt Schneider

    发明人： Wolfgang Hoelderich ,  Leopold Hupfer ,  Kurt Schneider

    IPC分类号： C07C45/59 ,  C07C49/11 ,  C07C49/203 ,  C07C49/21

    CPC分类号： C07C45/59 ,  C07C49/11 ,  C07C49/203 ,  C07C49/21 ,  Y02P20/582

    摘要： Unsaturated ketones of the formula ##STR1## and saturated ketones of the formula ##STR2## where R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, alkyl of 1 to 12 carbon atoms or a cycloalkyl, aryl, aralkyl or alkylaryl radical which inturn may be substituted, or R.sup.1 and R.sup.3 or R.sup.2 and R.sup.3, together with the carbon atoms to which they are bonded, may form a cycloalkane, are prepared by a process in which a 5-methylene-1,3-dioxolanone which is substituted in the 4-position and is of the forumla ##STR3## where R.sup.1, R.sup.2 and R.sup.3 have the above meanings, (a) for the preparation of an unsaturated ketone, is converted in the presence of a zeolite, of a phosphate having a zeolite structure and/or of B, Ce, Fe, Zr or Sr phosphate as catalysts and (b) for the preparation of a saturated ketone, is converted in the presence of the same catalysts which additionally carry one or more hydrogenation components.

    摘要翻译： 其中R1，R2和R3各自为氢，1至12个碳原子的烷基或可以被取代的环烷基，芳基，芳烷基或烷基芳基，其中式（IMAGE）的不饱和酮和式“IMAGE”的饱和酮， 或R 1和R 3或R 2和R 3与它们所键合的碳原子一起形成环烷烃的方法通过以下方法制备：其中在4-位被取代的5-亚甲基-1,3-二氧杂环戊酮 并且是其中R1，R2和R3具有上述含义的论文（a），（a）制备不饱和酮的方法，在沸石存在下，具有沸石结构的磷酸盐和/或 B，Ce，Fe，Zr或Sr磷酸盐作为催化剂，（b）制备饱和酮的催化剂在相同催化剂的存在下转化，另外还含有一种或多种氢化组分。