中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

197 records (took 0.033 seconds)

    METODO PARA LA ELABORACION DE CARBOXILATOS DE DIFLUORMETILPIRAZOLILO.
    41.
    发明专利
    METODO PARA LA ELABORACION DE CARBOXILATOS DE DIFLUORMETILPIRAZOLILO. 未知

    公开(公告)号：ES2338281T3

    公开(公告)日：2010-05-05

    申请号：ES07822162

    申请日：2007-11-02

    Applicant: BASF SE

    Inventor： RACK MICHAEL ,  SMIDT SEBASTIAN PEER ,  LOHR SANDRA ,  KEIL MICHAEL ,  DIETZ JOCHEN ,  RHEINHEIMER JOACHIM

    IPC: C07D237/04 ,  C07F7/04

    Abstract: Método para la preparación de carboxilatos de pirazol-4-ilo sustituidos con difluormetilo de la fórmula general (I), **(Ver fórmula)** donde R1 representa alquilo de C1-C8, cicloalquilo de C3-C8, alcoxi de C1-C4-alquilo de C1-C4, cicloalcoxi de C3-C8-alquilo de C1-C4, alquenilo de C2-C8 o representa opcionalmente bencilo sustituido por 1, 2 ó 3 sustituyentes Ry1 seleccionados independientemente uno de otro entre alquilo de C1-C4, alcoxi de C1-C4 o nitro; y R2 representa hidrógeno, alquilo de C1-C4, bencilo o fenilo; los dos sustituyentes mencionados de último pueden estar sin sustituir o sustituidos por 1, 2 ó 3 sustituyentes Ry2 seleccionados independientemente uno de otro entre halógeno, CN, nitro, alquilo de C1-C4, haloalquilo de C1-C4, alcoxi de C1-C4 o haloalcoxi de C1-C4; por el cual se hace reaccionar a) un compuesto de la fórmula general (II) **(Ver fórmula)** en la cual X representa flúor, cloro o bromo, R1 posee uno de los significados previamente indicados y R4 representa alquilo de C1-C8, cicloalquilo de C3-C8, alquenilo de C2-C8, bencilo o fenilo, reacciona con un compuesto de silano de la fórmula general R3nSiCl(4-n), en la cual n representa 1, 2 ó 3 y los sustituyentes R3 se seleccionan independientemente uno de otro entre alquilo de C1-C8 o fenilo, y con un metal que se selecciona entre los metales de los grupos 1, 2, 3, 4 y 12 del sistema periódico y tiene un potencial redox de menos de -0,7 V, respecto de un electrodo patrón de hidrógeno (a 25ºC y 101,325 kPa), y b) la mezcla de reacción del paso a) reacciona con un compuesto de la fórmula general (III) (III)R2HN-NH2 en la cual R2 tiene uno de los significados previamente indicados.

    42.
    发明专利
    未知

    公开(公告)号：AT464285T

    公开(公告)日：2010-04-15

    申请号：AT03720529

    申请日：2003-04-25

    Applicant: BASF SE

    Inventor： ENGEL STEFAN ,  KEIL MICHAEL ,  OTT CHRISTIAN ,  RACK MICHAEL

    IPC: C07C253/30 ,  C07B61/00 ,  C07C255/56

    Abstract: A process is described for preparing 3-trifluoromethylphenyl 4-cyanobenzyl ketone by reacting a C 1 -C 2 -alkyl 3-trifluoromethylbenzoate with 4-tolunitrile in an aprotic polar solvent or an aprotic polar solvent mixture in the presence of at least an equimolar amount of a base which is selected from potassium alkoxides of primary C 1 -C 4 -alkanols.

    PROCESS FOR PREPARING ALKYL 2-ALKOXYMETHYLENE-4,4-DIFLUORO-3-OXOBUTYRATES
    44.
    发明专利
    PROCESS FOR PREPARING ALKYL 2-ALKOXYMETHYLENE-4,4-DIFLUORO-3-OXOBUTYRATES 未知

    公开(公告)号：CA2715668A1

    公开(公告)日：2009-09-03

    申请号：CA2715668

    申请日：2009-02-27

    Applicant: BASF SE

    Inventor： MAYWALD VOLKER ,  SMIDT SEBASTIAN PEER ,  WOLF BERND ,  KORADIN CHRISTOPHER ,  ZIERKE THOMAS ,  RACK MICHAEL ,  KEIL MICHAEL

    IPC: C07C67/343 ,  C07C69/72

    Abstract: A process for preparing alkyl 2-alkoxymethylene-4,4-difluoro-3-oxobutyrates (VI) where R is methyl or ethyl, from crude reaction mixtures of alkyl 4,4-difluoroacetoacetates (I) by a) reacting alkyl acetate (II), RO M alkoxide (III), where M is a sodium or potassium ion, and alkyl difluoroacetate (IV), without additional solvent to form an enolate (V), b) releasing the corresponding alkyl 4,4-difluoroacetoacetate (I) from the enolate (V) by means of acid, c) removing the salt formed from cation M and acid anion as a solid and d) converting (I), without isolation from the crude reaction mixture, to the alkyl 2-alkoxymethylene-4,4-difluoro-3-oxobutyrate (VI), and the use of (VI) for preparing 1-methyl-3-difluoromethyl-pyrazol-3-ylcarboxyates (VII).

    Process for preparing substituted biphenyls
    47.
    发明专利
    Process for preparing substituted biphenyls 未知

    公开(公告)号：AU2007267055A1

    公开(公告)日：2007-12-06

    申请号：AU2007267055

    申请日：2007-05-31

    Applicant: BASF SE

    Inventor： DIETZ JOCHEN ,  SMIDT SEBASTIAN PEER ,  GROTE THOMAS ,  KEIL MICHAEL

    IPC: C07C201/12 ,  C07C205/12 ,  C07C209/68 ,  C07C211/52

    Abstract: A process for preparing substituted biphenyls of the formula I in which the substituents are defined as follows: X is fluorine or chlorine; R1 is nitro, amino or NHR3; R2 is cyano, nitro, halogen, C1-C6-alkyl, C1-C-6-alkenyl, C1-C6-alkynyl, C1-C6-alkoxy, C1-C6-haloalkyl, C1-C6-alkylcarbonyl or phenyl; R3 is C1-C4-alkyl, C1-C4-alkenyl or C1-C4-alkynyl; n is 1, 2 or 3, where in case that n is 2 or 3, the R.sup.2 radicals may also be different, which comprises reacting the compound of the formula II in which Hal is halogen and X and R1 are as defined above, in the presence of a base and of a palladium catalyst selected from the group of:3 a) palladium-triarylphosphine or -trialkylphosphine complex with palladium in the zero oxidation state, b) salt of palladium in the presence of triarylphospine or trialkylphosphine as a complex ligand or c) metallic palladium, optionally applied to support, in the presence of triarylphosphine or trialkylphosphine, in a solvent, with a diphenylborinic acid (III) in which R2 and n are as defined above, where the triarylphosphines or trialkylphosphines used may be substituted.

Patent Agency Ranking