中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

98 records (took 0.034 seconds)

    2.
    发明专利
    未知

    公开(公告)号：NO318052B1

    公开(公告)日：2005-01-24

    申请号：NO20012470

    申请日：2001-05-18

    Applicant: BASF AG

    Inventor： GOTZ NORBERT ,  RACK MICHAEL ,  GOTZ ROLAND ,  MAYWALD VOLKER ,  STEINMETZ ADRIAN ,  HENKELMANN JOCHEM ,  BECKER HEIKE ,  BAYETO JUAN JOSE AISCAR

    IPC: C07D231/20

    Abstract: The invention relates to a process for preparing 1-substituted 5- and/or 3-hydroxypyrazoles of the formulae I and IIin which R1 is C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl, C3-C6-cycloalkyl or C1-C4-alkoxy, where these groups may be substituted by halogen, C1-C4-alkoxy, phenoxy, C1-C6-alkoxycarbonyl, C1-C6-alkylthiocarbonyl or by a cyclic ring system having 3-14 ring atoms, which comprises reactingan alkyl 3-alkoxyacrylate of the formula IIIin which R2, R3 independently of one another are C1-C6-alkyl or C3-C6-cycloalkyl with a hydrazine of the formula IVin which R1 is as defined abovea) at a pH of 6-11 to give 5-hydroxypyrazoles of the formula I orb) at a pH of 11-14 to give 3-hydroxypyrazoles of the formula II.

    METHOD FOR PRODUCING OXIME ETHERS
    3.
    发明专利
    METHOD FOR PRODUCING OXIME ETHERS 未知

    公开(公告)号：PL358277A1

    公开(公告)日：2004-08-09

    申请号：PL35827701

    申请日：2001-04-04

    Applicant: BASF AG

    Inventor： GOTZ ROLAND ,  WOLF BERND ,  RACK MICHAEL

    IPC: C07B61/00 ,  C07C249/12 ,  C07C251/38 ,  C07C249/14

    Abstract: A process for preparing oxime ethers of the formula I,in which the substituents R and R can be identical or different and can each be cyano, alkyl, haloalkyl, cycloalkyl, phenyl and naphthyl, and R can be alkyl, by alkylation of oximes of the formula IIunder basic conditions with an alkylating agent from the group of alkyl halides, dialkyl sulfates and dialkyl carbonates, wherein the reaction is carried out in a mixture consisting of5 to 25% by weight of polar aprotic solvents selected from the group of nitrites, N-alkylpyrrolidones, cyclic urea derivatives, dimethylformamide and dimethylacetamide,55 to 95% by weight of nonpolar solvents selected from the group of aliphatic hydrocarbons, aromatic hydrocarbons, alkyl alkylcarboxylates and ethers, and0 to 25% by weight of water, the contents thereof totaling 100%.

    4.
    发明专利
    未知

    公开(公告)号：ES2207988T3

    公开(公告)日：2004-06-01

    申请号：ES99972625

    申请日：1999-11-06

    Applicant: BASF AG

    Inventor： MAYWALD VOLKER ,  STEINMETZ ADRIAN ,  RACK MICHAEL ,  GOTZ NORBERT ,  GOTZ ROLAND ,  HENKELMANN JOCHEM

    IPC: C07D231/20

    Abstract: The invention relates to a process for preparing 1-substituted 5- and/or 3-hydroxypyrazoles of the formulae I and IIin which R1 is C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl, C3-C6-cycloalkyl or C1-C4-alkoxy, where these groups may be substituted by halogen, C1-C4-alkoxy, phenoxy, C1-C6-alkoxycarbonyl, C1-C6-alkylthiocarbonyl or by a cyclic ring system having 3-14 ring atoms, which comprises reactingan alkyl 3-alkoxyacrylate of the formula IIIin which R2, R3 independently of one another are C1-C6-alkyl or C3-C6-cycloalkyl with a hydrazine of the formula IVin which R1 is as defined abovea) at a pH of 6-11 to give 5-hydroxypyrazoles of the formula I orb) at a pH of 11-14 to give 3-hydroxypyrazoles of the formula II.

    5.
    发明专利
    未知

    公开(公告)号：PT1131299E

    公开(公告)日：2004-02-27

    申请号：PT99972625

    申请日：1999-11-06

    Applicant: BASF AG

    Inventor： HENKELMANN JOCHEM ,  RACK MICHAEL ,  GOTZ NORBERT ,  MAYWALD VOLKER ,  GOTZ ROLAND ,  STEINMETZ ADRIAN ,  BECKER HEIKE ,  BAYETO JUAN JOSE AISCAR

    IPC: C07D231/20

    Abstract: The invention relates to a process for preparing 1-substituted 5- and/or 3-hydroxypyrazoles of the formulae I and IIin which R1 is C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl, C3-C6-cycloalkyl or C1-C4-alkoxy, where these groups may be substituted by halogen, C1-C4-alkoxy, phenoxy, C1-C6-alkoxycarbonyl, C1-C6-alkylthiocarbonyl or by a cyclic ring system having 3-14 ring atoms, which comprises reactingan alkyl 3-alkoxyacrylate of the formula IIIin which R2, R3 independently of one another are C1-C6-alkyl or C3-C6-cycloalkyl with a hydrazine of the formula IVin which R1 is as defined abovea) at a pH of 6-11 to give 5-hydroxypyrazoles of the formula I orb) at a pH of 11-14 to give 3-hydroxypyrazoles of the formula II.

    Method for producing 1-substituted 5- or 3-hydroxypyrazoles
    6.
    发明专利
    Method for producing 1-substituted 5- or 3-hydroxypyrazoles 未知

    公开(公告)号：NZ511645A

    公开(公告)日：2003-07-25

    申请号：NZ51164599

    申请日：1999-11-06

    Applicant: BASF AG

    Inventor： GOTZ NORBERT ,  GOTZ ROLAND ,  HENKELMANN JOCHEM ,  BECKER HEIKE ,  AISCAR BAYETO JUAN JOSE ,  MAYWALD VOLKER ,  STEINMETZ ADRIAN ,  RACK MICHAEL

    IPC: C07D231/20

    Abstract: A process for preparing a 1-substituted 5- and/or 3-hydroxypyrazole of the formulae I and II, respectively in which R1 is C1 -C6 -alkyl, C2 -C6 -alkenyl, C2 -C6 -alkynyl, C3 -C6 -cycloalkyl or C1 -C4 -alkoxy. These groups may be substituted by halogen, C1 -C4 -alkoxy, phenoxy, C1 -C6 -alkoxycarbonyl, C1 -C6 -alkylthiocarbonyl or by a cyclic ring system having 3-14 ring atoms. An alkyl vinyl of formula V, reacts with phosgene VIa, "diphosgene" VIb or "triphosgene" VIc, producing an acyl chloride of the formula VII. The alkyl vinyl R2 is C1 -C6 -alkyl or C3 -C6 -cycloalkyl. The acyl chloride is converted by the elimination of hydrogen chloride into 3-alkoxyacryloyl chloride of the formula VIII. Esterifying the 3-alkoxyacryloyl chloride with an alcohol of formula IX, in which R3 is C1 -C6 -alkyl or C3 -C6 -cycloalkyl. This results in the alkyl 3-alkoxyacrylate of the formula III, Reacting the alkyl 3-alkoxyacrylate with a hydrazine of the formula IV, where R1 is defined above a)at a pH of 6-11 to give 5-hydroxypyrazoles of the formula I or b) b) at a pH of 11-14 to give 3-hydroxypyrazoles of the formula II. A 1-substituted 5- and/or 3-hydroxypyrazole of the formulae I and II produced from the above stated process.

    Process for preparing 1-substituted 5- or 3-hydroxypyrazoles
    8.
    发明专利
    Process for preparing 1-substituted 5- or 3-hydroxypyrazoles 未知

    公开(公告)号：CZ20011713A3

    公开(公告)日：2002-01-16

    申请号：CZ20011713

    申请日：1999-11-06

    Applicant: BASF AG

    Inventor： MAYWALD VOLKER ,  STEINMETZ ADRIAN ,  RACK MICHAEL ,  GOTZ NORBERT ,  GOTZ ROLAND ,  HENKELMANN JOCHEM ,  BECKER HEIKE ,  BAYETO JUAN JOSE AISCAR

    IPC: C07D231/20

    Abstract: The invention relates to a process for preparing 1-substituted 5- and/or 3-hydroxypyrazoles of the formulae I and IIin which R1 is C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl, C3-C6-cycloalkyl or C1-C4-alkoxy, where these groups may be substituted by halogen, C1-C4-alkoxy, phenoxy, C1-C6-alkoxycarbonyl, C1-C6-alkylthiocarbonyl or by a cyclic ring system having 3-14 ring atoms, which comprises reactingan alkyl 3-alkoxyacrylate of the formula IIIin which R2, R3 independently of one another are C1-C6-alkyl or C3-C6-cycloalkyl with a hydrazine of the formula IVin which R1 is as defined abovea) at a pH of 6-11 to give 5-hydroxypyrazoles of the formula I orb) at a pH of 11-14 to give 3-hydroxypyrazoles of the formula II.

    Method for producing oxime ethers
    9.
    发明专利
    Method for producing oxime ethers 未知

    公开(公告)号：AU5830801A

    公开(公告)日：2001-10-23

    申请号：AU5830801

    申请日：2001-04-04

    Applicant: BASF AG

    Inventor： GOTZ ROLAND ,  WOLF BERND ,  RACK MICHAEL

    IPC: C07B61/00 ,  C07C249/12 ,  C07C251/38 ,  C07C249/14 ,  C07C251/32

    Abstract: A process for preparing oxime ethers of the formula I,in which the substituents R and R can be identical or different and can each be cyano, alkyl, haloalkyl, cycloalkyl, phenyl and naphthyl, and R can be alkyl, by alkylation of oximes of the formula IIunder basic conditions with an alkylating agent from the group of alkyl halides, dialkyl sulfates and dialkyl carbonates, wherein the reaction is carried out in a mixture consisting of5 to 25% by weight of polar aprotic solvents selected from the group of nitrites, N-alkylpyrrolidones, cyclic urea derivatives, dimethylformamide and dimethylacetamide,55 to 95% by weight of nonpolar solvents selected from the group of aliphatic hydrocarbons, aromatic hydrocarbons, alkyl alkylcarboxylates and ethers, and0 to 25% by weight of water, the contents thereof totaling 100%.

    METHOD FOR THE PRODUCTION OF 1-SUBSTITUTED 5-HYDROXYPYRAZOLES
    10.
    发明专利
    METHOD FOR THE PRODUCTION OF 1-SUBSTITUTED 5-HYDROXYPYRAZOLES 未知

    公开(公告)号：CA2351425A1

    公开(公告)日：2000-06-02

    申请号：CA2351425

    申请日：1999-11-06

    Applicant: BASF AG

    Inventor： GOTZ ROLAND ,  GOTZ NORBERT ,  HENKELMANN JOCHEM ,  RACK MICHAEL ,  STEINMETZ ADRIAN ,  MAYWALD VOLKER ,  BECKER HEIKE ,  AISCAR BAYETO JUAN JOSE

    IPC: C07B61/00 ,  C07D231/20

    Abstract: The invention relates to a method for the production of 1-substituted 5- hydroxypyrazoles of formula (I) wherein R1 is C1-C6-alkyl, C2-C6-alkenyl, C2 - C6-alkinyl, C3-C6-cycloalkyl or C1-C4-alkoxy, whereby these groups can be substituted by halogen, C1-C4-alkoxy, phenoxy, C1-C6-alkoxycarbonyl, C1-C6- alkylthiocarbonyl or a cyclic ring system with 3-14 ring atoms, by reacting a) an alkylvinylether of general formula (III) wherein R2 is C1-C6-alkyl or C3- C6- cycloalkyl, with phosgene (IVa), "diphosgene" (IVb) or "triphosgene" (IVc) t o form acid chlorides of formula (V), b) transforming said acid chlorides by eliminating hydrogen chloride into the corresponding 3-alkoxyacrylic acid chloride of formula (VI) and c) reacting said acid chloride with hydrazines of formula (VII) wherein R1 has the above cited meaning, to form 5- hydroxypyrazoles of formula (I).

Patent Agency Ranking