中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

50 records (took 0.023 seconds)

    PROCEDIMIENTO PARA LA OBTENCION DE DERIVADOS DE TRIOXIMA.
    21.
    发明专利
    PROCEDIMIENTO PARA LA OBTENCION DE DERIVADOS DE TRIOXIMA. 未知

    公开(公告)号：ES2252250T3

    公开(公告)日：2006-05-16

    申请号：ES01947442

    申请日：2001-07-04

    Applicant: BASF AG

    Inventor： KRAMER ANDREAS ,  KIEFER MATTHIAS ,  HENNINGSEN MICHAEL ,  SIEGEL WOLFGANG ,  SCHRODER JOCHEN

    IPC: C07B61/00 ,  C07C249/06 ,  C07C249/08 ,  C07C251/40 ,  C07C251/58 ,  C07C251/60 ,  C07C49/12

    Abstract: Procedimiento para la obtención de derivados de trioxima de la fórmula I, en la que los substituyentes R1 y R2 pueden ser iguales o diferentes y pueden significar, respectivamente, ciano, alquilo con 1 a 4 átomos de carbono, halógenoalquilo con 1 a 4 átomos de carbono y cicloalquilo con 3 a 6 átomos de carbono y R3 y R4 pueden ser iguales o diferentes y pueden significar, respectivamente, alquilo con 1 a 4 átomos de carbono, halógenoalquilo con 1 a 4 átomos de carbono, cicloalquilo con 3 a 6 átomos de carbono, alquilcarbonilo con 1 a 4 átomos de carbono o aril- alquilo con 1 a 4 átomos de carbono, mediante las siguientes etapas de reacción en agua sin aislamiento de los productos intermedios: A) nitrosación de 1, 3-dicetonas de la fórmula II para dar monooximas de la fórmula III, B) oximación de III con derivados de hidroxiamina de la fórmula IV H2N-OR3'' IV en la que R3'' significa hidrógeno o un grupo R3, o con sus sales de adición con ácidos, para dar bisoximas de la fórmula V, C) alquilación de V con agentes de alquilación o acilación de V con agentes de acilación para dar compuestos de la formula VI y D) a continuación oximación de VI con hidroxilamina para dar los compuestos de la formula I.

    23.
    发明专利
    未知

    公开(公告)号：BR0112167A

    公开(公告)日：2003-05-06

    申请号：BR0112167

    申请日：2001-07-04

    Applicant: BASF AG

    Inventor： KRAMER ANDREAS ,  KIEFER MATTHIAS ,  HENNINGSEN MICHAEL ,  SIEGEL WOLFGANG ,  DER JOCHEN SCHR

    IPC: C07B61/00 ,  C07C249/06 ,  C07C249/08 ,  C07C251/40 ,  C07C251/58 ,  C07C251/60 ,  C07C49/12

    Abstract: The present invention relates to a process for preparing trioxime derivatives of the formula I in which the substituents R 1 and R 2 are identical or different and each is cyano, alkyl, haloalkyl or cycloalkyl, and R 3 and R 4 are identical or different and each is alkyl, haloalkyl, cycloalkyl, alkylcarbonyl or arylalkyl, by the following reaction steps in water without isolation of the intermediates: A) nitrosation of 1,3-diketones of the formula II to give monooximes of the formula III, B) oximation of III with hydroxylamine derivatives of the formula IV H 2 N-OR 3' IV in which R 3' is hydrogen or a group R 3 to give bisoximes of the formula V, C) alkylation of V with alkylating agents or acylation of V with acylating agents to give compounds of the formula VI and D) subsequent oximation of VI with hydroxylamine to give compounds of the formula I.

    26.
    发明专利
    未知

    公开(公告)号：DE50108012D1

    公开(公告)日：2005-12-15

    申请号：DE50108012

    申请日：2001-07-04

    Applicant: BASF AG

    Inventor： KRAMER ANDREAS ,  KIEFER MATTHIAS ,  HENNINGSEN MICHAEL ,  SIEGEL WOLFGANG ,  SCHROEDER JOCHEN

    IPC: C07B61/00 ,  C07C249/06 ,  C07C249/08 ,  C07C251/40 ,  C07C251/58 ,  C07C251/60 ,  C07C49/12

    Abstract: The present invention relates to a process for preparing trioxime derivatives of the formula I in which the substituents R 1 and R 2 are identical or different and each is cyano, alkyl, haloalkyl or cycloalkyl, and R 3 and R 4 are identical or different and each is alkyl, haloalkyl, cycloalkyl, alkylcarbonyl or arylalkyl, by the following reaction steps in water without isolation of the intermediates: A) nitrosation of 1,3-diketones of the formula II to give monooximes of the formula III, B) oximation of III with hydroxylamine derivatives of the formula IV H 2 N-OR 3' IV in which R 3' is hydrogen or a group R 3 to give bisoximes of the formula V, C) alkylation of V with alkylating agents or acylation of V with acylating agents to give compounds of the formula VI and D) subsequent oximation of VI with hydroxylamine to give compounds of the formula I.

    28.
    发明专利
    未知

    公开(公告)号：ES2207226T3

    公开(公告)日：2004-05-16

    申请号：ES99924920

    申请日：1999-05-10

    Applicant: BASF AG

    Inventor： RIECHERS HARTMUT ,  SIMON JOACHIM ,  HOHN ARTHUR ,  KRAMER ANDREAS ,  FUNKE FRANK ,  SIEGEL WOLFGANG

    IPC: B01J23/755 ,  C07B55/00 ,  C07B57/00 ,  C07B61/00 ,  C07C209/68 ,  C07C209/88 ,  C07C211/03 ,  C07C213/02 ,  C07C213/08 ,  C07C217/08

    Abstract: A process for the preparation of racemic amines of the formula I where R1 and R2 are different and R1, R2, R3 are alkyl, cycloalkyl, arylalkyl, aryl, heteroaryl and heterocyclic radicals and R3 can also be hydrogen, where the radicals can bear substituents selected from the group consisting of alkyl, cycloalkyl, alkoxy, aryloxy, amino, alkylamino and dialkylamino, which comprises simultaneously reacting in situ the corresponding optically active amine I and the secondary alcohol of the formula II and/or the unsymmetrical ketone of the formula III and the amine of the formula R3NH2 in the presence of hydrogen and a hydrogenation catalyst or dehydrogenation catalyst at elevated temperature.

Patent Agency Ranking