37.
    发明专利
    未知

    公开(公告)号:BRPI0707107A2

    公开(公告)日:2011-04-19

    申请号:BRPI0707107

    申请日:2007-05-31

    Applicant: BASF SE

    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.

    PROCEDIMIENTO PARA LA PREPARACION DE BIFENILOS SUSTITUIDOS.

    公开(公告)号:MX2010013212A

    公开(公告)日:2010-12-21

    申请号:MX2010013212

    申请日:2009-06-22

    Applicant: BASF SE

    Abstract: Procedimiento para la preparación de bifenilos sustituidos de la fórmula I (Ver fórmula I) en la que R1 = nitro o amino, R2 = ciano, halógeno, haloalquilo-C1-C4, haloalcoxi-C1-C4 o haloalquil-C1-C4-tio, n = 0 a 3 y R3 = hidrógeno, ciano o halógeno, caracterizado porque se hace reaccionar un halobenceno de la fórmula II (Ver fórmula II) en la que Hal representa cloro o bromo, en presencia de una base y un catalizador de paladio compuesto de paladio y un ligando fosforado bidentado de la fórmula III (Ver fórmula III) en la que Ar representa fenilo, si se lo desea, sustituido, y R4 y R5 representan, en cada caso, alquilo-C1-C8 o cicloalquilo-C3-C6 o forman conjuntamente un puente de 2 a 7 miembros, el cual, si se lo desea, puede portar un sustituyente alquilo-C1-C6, en un disolvente o diluyente con un ácido fenil-borónico IVa (Ver fórmula IVa) de un ácido difenil-borínico lVb (Ver fórmula IVb) o una mezcla de IVa y lVb.

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