METHOD FOR PRODUCING O-CHLOROMETHYL BENZOIC ACID CHLORIDES
    3.
    发明申请
    METHOD FOR PRODUCING O-CHLOROMETHYL BENZOIC ACID CHLORIDES 审中-公开
    制备邻氯甲基苯甲酸氯化物的方法

    公开(公告)号:WO0142182A3

    公开(公告)日:2001-12-06

    申请号:PCT/EP0011810

    申请日:2000-11-27

    CPC classification number: C07C51/60 C07C63/04 C07C63/10

    Abstract: The invention relates to a method for producing o-chloromethyl benzoic acid chlorides of formula (I), in which R to R can be the same or different and represent hydrogen C1-C4 alkyl, halogen or trifluoromethyl, by reacting benzo-condensed lactones of formula (II), in which R to R have the above-mentioned meaning, with thionyl chloride. The inventive method is characterized in that the reaction is carried out in the presence of catalytic quantities of a boric acid, boric acid anhydride, borate, boronic acid or boronic acid ester and in the presence of catalytic quantities of a quaternary ammonia salt.

    Abstract translation: 本发明涉及一种用于制备式(I)的邻 - 氯甲基苯甲酰氯,于R的处理<4>可以<1>是相同的或R不同,并代表氢,C1-C4烷基,卤素或三氟甲基,通过使 苯并稠合的式内酯(II),至R <4>具有R <1>如上所定义,与亚硫酰氯,其特征在于gekennzeichet,在催化量的硼酸,的存在下进行反应硼酸酐,硼酸盐,硼酸或Boronsäureester一个和 催化量的季铵盐。

    METHOD FOR PRODUCING CARBONYL DIIMIDAZOLES

    公开(公告)号:CA2336657C

    公开(公告)日:2009-02-24

    申请号:CA2336657

    申请日:1999-07-06

    Applicant: BASF AG

    Abstract: The invention relates to a method for producing carbonyl diimidazoles of general formulas (Ia), (Ib), (Ic) or mixtures thereof, whereby R1 represents hydrogen or a C1-C4 alkyl radical and R2 represents hydrogen o r a methyl radical. According to the invention, stoichiometric quantities of an organic nitrogenous base which comprises a lower pK b value than imidazole is added to the reaction mixture with regard to the imidazoles by reacting at least one imidazole of general formulas (IIa) and (IIb) in which R1 and R2 have the aforementioned meanings with phosgene in an inert solvent.

    PROCEDIMIENTO PARA LA PURIFICACION DE CLORUROS DE ACIDO CARBOXILICO.

    公开(公告)号:ES2235972T3

    公开(公告)日:2005-07-16

    申请号:ES00972657

    申请日:2000-08-31

    Applicant: BASF AG

    Abstract: Procedimiento para la purificación de cloruros de ácido carboxílico que se han fabricado mediante reacción de ácidos carboxílicos con fosgeno o cloruro de tionilo en presencia de un aducto del catalizador y se han separado de la fase que contiene el aducto del catalizador, caracterizado porque los cloruros de ácido carboxílico se tratan con un hidrohalogenuro de amidas del ácido carboxílico de fórmula general (I) en la que R1 representa hidrógeno o alquilo C1 a C3; R2 y R3 significan independientemente entre sí alquilo C1 a C4 o R2 y R3 juntos significan una cadena alquileno C4 o C5, en la que la solubilidad mutua del cloruro de ácido carboxílico y del hidrohalogenuro de la amida del ácido carboxílico (I) es baja y que el cloruro de ácido carboxílico así impurificado se aísla mediante la separación de la fase del hidrohalogenuro de la amida del ácido carboxílico.

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