СПОСОБ ПОЛУЧЕНИЯ 1-ЗАМЕЩЕННЫХ 5- ИЛИ 3-ГИДРОКСИПИРАЗОЛОВ

    公开(公告)号:EA003753B1

    公开(公告)日:2003-08-28

    申请号:EA200100522

    申请日:1999-11-06

    Applicant: BASF AG

    Abstract: Изобретениеотноситсяк способуполучения 1-замещенных 5- и/или 3-гидроксипиразоловформул I и IIгде Rозначает C-Салкил, C-Салкенил, C-Салкинил, C-СциклоалкилилиС-Салкокси, причемэтигруппымогутбытьзамещеныгалогеном, C-Салкокси, фенокси, C-Салкоксикарбонилом, C-Салкилтиокарбониломилициклическойсистемойс 3-14 атомамицикла, причемсложныйалкиловыйэфир 3-алкоксиакриловойкислотыформулы IIIгде R, Rнезависимодруготдругаозначают C-Салкилили C-Сциклоалкил, подвергаютвзаимодействиюс гидразиномформулы IVгде Rимеетвышеприведенноезначение,а) сполучениемпризначениирН, равном 6-11, 5-гидроксипиразоловформулы Iилиб) сполучениемпризначениирН, равном 11-14, 3-гидроксипиразоловформулы 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.

    113.
    发明专利
    未知

    公开(公告)号:ES2190243T3

    公开(公告)日:2003-07-16

    申请号:ES99941607

    申请日:1999-08-13

    Applicant: BASF AG

    Abstract: The invention relates to a method for producing alkyne diols by reacting ketones with acetylenic hydrocarbons in an organic solvent in the presence of a base which contains potassium alcoholates of primary and/or secondary alcohols. The alkyne diols are produced while forming adducts which precipitate out of the reaction mixture and which are comprised of alkyne monoalcohols and/or alkyne diols and a base. The stoichiometries of the reaction partners are selected such that gelatinous adducts are formed which comprise a spherical surface, whereby the reaction mixture remains agitable during the entire reaction.

    114.
    发明专利
    未知

    公开(公告)号:DE10152117A1

    公开(公告)日:2003-04-30

    申请号:DE10152117

    申请日:2001-10-23

    Applicant: BASF AG

    Abstract: The invention relates to a method for producing isocyanates by reacting the corresponding primary amines with phosgene in an inert solvent. According to said method, between 0.01 and 50 mol. % of a phosphine oxide is used, in relation to the total amount of primary amine and isocyanate formed in the reaction solution.

    119.
    发明专利
    未知

    公开(公告)号:BR0016214A

    公开(公告)日:2002-09-17

    申请号:BR0016214

    申请日:2000-11-27

    Applicant: BASF AG

    Abstract: The invention relates to a method for producing o-choromethyl benzenecarbonyl chlorides of formula (I), wherein R -R can be the same or different and stand for hydrogen, C1-C4-alkyl, halogen or trifluoromnethyl, by converting benzocondensed lactones of formula (II), wherein R -R have the aforementioned meaning, with gaseous or liquid phosgene and the dimers or trimers thereof. The inventive method is characterized in that the conversion is carried out in the presence of catalytical amounts of a Lewis acid and catalytical amounts of a phosgenation catalyst

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