25.
    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

    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

    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

    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.

    ЗАМЕЩЕННЫЕ 4-БЕНЗОИЛПИРАЗОЛЫ

    公开(公告)号:EA002421B1

    公开(公告)日:2002-04-25

    申请号:EA199900612

    申请日:1997-12-19

    Applicant: BASF AG

    Abstract: Изобретениеотноситсяк замещенным 4-бензоилпиразоламформулы Iвкоторойзаместителиимеютследующиезначения:R, R- водород, нитро, галоген, циано, родано, алкил, галогеналкил, алкоксиалкил, алкенил, алкинил, группы -OR, -OCOR, -OSOR, -SH, -S(O)R, -SOOR, -SONRR, -NRSORили -NRCOR;R- водород, циано, алкил, галогеналкил, группы -OR, -SRили -NRR;R- водород, необязательнозамещенныйалкил, циклоалкил, алкенил, циклоалкенил, алкинил, группы -COR, -COR, -COSRили -CONRR;X - кислородили NR;n 0,1 или 2;R- водород, алкил, галогеналкил, алкоксиалкил, алкенилилиалкинил;R- алкилилигалогеналкил;R- алкил, галогеналкил, алкоксиалкил, алкенилилиалкинил;R- водородилиалкил;R- алкил, алкенил, алкинил, фенилилибензил;R- алкил, галогеналкил, алкенилилиалкинил;Q - необязательнозамещенный, соединенныйв положении 4 пиразол;атакжек ихприменимымв сельскомхозяйствесолям; кспособуполучениясоединенийформулы I, ксредствам, содержащимэтисоединения, ик применениюэтихсоединенийилисодержащихэтисоединениясредствдляборьбыс нежелательнымростомрастений.

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