Método para la preparación de ésteres halosustituidos de ácido 2-(aminometiliden)-3-oxobutírico

    公开(公告)号:ES2386940T3

    公开(公告)日:2012-09-06

    申请号:ES09738223

    申请日:2009-04-30

    Applicant: BASF SE

    Abstract: Método para la preparación de compuestos de la fórmula (I), **Fórmula**dondeR1 representa alquilo de C1-C6, haloalquilo de C1-C6, alquenilo de C2-C6, cicloalquilo de C3-C10 o bencilo, en cuyocaso ambos residuos mencionados de último están sin sustituir o tienen 1, 2 o 3 sustituyentes seleccionadosindependientemente entre sí de halógeno, CN, nitro, alquilo de C1-C4, haloalquilo de C1-C4, alcoxi de C1-C4 yhaloalcoxi de C1-C4;R2 y R3, independientemente entre sí, representan alquilo de C1-C6, haloalquilo de C1-C6, alquenilo de C2-C6,cicloalquilo de C3-C10 o bencilo, en cuyo caso los dos residuos mencionados de último están sin sustituir o tienen o1, 2 o 3 sustituyentes seleccionados independientemente entre sí de entre halógeno, CN, nitro, alquilo de C1-C4,haloalquilo de C1-C4, alcoxi de C1-C4 y haloalcoxi de C1-C4; oR2 conjuntamente con R3 y el átomo de nitrógeno al cual ambos residuos están enlazados representan un residuoheterocíclico de 5 a 10 miembros opcionalmente sustituidos, el cual puede comprender, además del átomo denitrógeno, 1, 2 o 3 heteroátomos más seleccionados entre O, N y S en calidad de miembros de anillo;R4 representa hidrógeno, flúor o cloro; yX1 y X2, independientemente entre sí, representan flúor o cloro;En el cual se hace reaccionar un compuesto de la fórmula (II),donde R1, R2 y R3 tienen uno de los significados dados previamente; con un compuesto de la fórmula X1X2R420 CC(>=O)-F en presencia de al menos un fluoruro de metal alcalino o de metal alcalino térreo.

    Process for preparing difluoromethylpyrazolyl carboxylates

    公开(公告)号:AU2007316081B2

    公开(公告)日:2012-04-26

    申请号:AU2007316081

    申请日:2007-11-02

    Applicant: BASF SE

    Abstract: The present invention relates to a process for preparing difluoromethyl-substituted pyrazol-4-yl carboxylates of the formula (I) in which R is C-C-alkyl, C-C-cycloalkyl, C-C-alkoxy-C-C-alkyl, etc.; and R is hydrogen, C-C-alkyl, benzyl or phenyl, wherein a) a compound of the general formula (II) in which X is fluorine, chlorine, or bromine, R has one of the definitions given above, and R is C-C-alkyl, C-C-cycloalkyl, C-C-alkenyl, benzyl or phenyl, is reacted with a silane compound of the general formula R SiClin which n is 1, 2 or 3 and the substituents R are each independently selected from C-C-alkyl and phenyl, and with a metal which is selected from the metals of groups 1, 2, 3, 4 and 12 of the periodic table and has a redox potential of less than -0.7 V, based on a standard hydrogen electrode (at 25°C and 101.325 kPa); and b) the reaction mixture from step a) is reacted with a compound of the general formula (III) in which R has one of the definitions given above.

    METHOD FOR PRODUCING SUBSTITUTED BIPHENYLS

    公开(公告)号:ZA201100589B

    公开(公告)日:2012-03-28

    申请号:ZA201100589

    申请日:2011-01-24

    Applicant: BASF SE

    Abstract: Preparation of substituted biphenyl compounds (I), comprises reacting halobenzene compounds (II) with phenyl boronic acid compounds (IVa) and/or diphenyl boronic acid compounds (IVb) in a solvent or a diluent in the presence of a base and a palladium catalyst, which comprises palladium and a bidentate phosphorus ligand (III). Preparation of substituted biphenyl compounds of formula (I), comprises reacting halobenzene compounds of the formula (II) with phenyl boronic acid compounds of formula (IVa) and/or diphenyl boronic acid compounds of formula (IVb) in a solvent or diluent in the presence of a base and a palladium catalyst, which comprises palladium and a bidentate phosphorus ligand of formula (((Ar1) 2P-CH 2-)(R5)C(R4)(-CH 2-P(Ar1) 2)) (III). R1 : NO 2or NH 2; R2 : CN, halo, 1-4C-haloalkyl, 1-4C-haloalkoxy or 1-4C-haloalkylthio; R3 : H, CN or halo; Hal : Cl or Br; Ar1 : phenyl, which optionally contains 1-3 substituents comprising CH 3, CH 3O, F or Cl; either R4, R5 : 1-5C-alkyl or 3-6C-cycloalkyl; or R4R5 : 2-7-membered bridge, which optionally carries 1-8C-alkyl; and n : 0-3. An independent claim is included for 3,4,5-trifluoro-2'-nitrobiphenyl. [Image].

    СПОСОБ ПОЛУЧЕНИЯ ДИФТОРМЕТИЛПИРАЗОЛИЛКАРБОКСИЛАТОВ

    公开(公告)号:UA97498C2

    公开(公告)日:2012-02-27

    申请号:UAA200904967

    申请日:2007-11-02

    Applicant: BASF SE

    Abstract: Данноеизобретениекасаетсяспособаполучениядифторметилзамещенныхпиразол-4-илкарбоксилатовформулы I, (I)вкоторойRозначает C-C-алкил, С-С-циклоалкил, С-С-алкокси-С-С-алкили т.п.; иRозначаетводород, С-С-алкил, бензилилифенил,причема) соединениеобщейформулы II, (II)вкоторой X означаетфтор, хлорилибром, Rимеетодноизприведенныхпреждезначенийи RозначаетС-С-циклоалкил, С-С-алкенил, бензилилифенил,взаимодействуетс силановымсоединениемобщейформулы RSiCl, вкоторой n означает 1, 2 или 3 изаместители R, независимодруготдругавыбраныизС-С-алкилаилифенила, ис металлом, которыйвыбранизметаллов 1, 2, 3, 4 и 12 группыПериодическойсистемыэлементови имеетокислительно-восстановительныйпотенциалменьшечем-0,7 V, вперечислениинанормальныйводородныйэлектро

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