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    PROCESS FOR PRODUCING CYCLIC N-HYDROXYIMIDE COMPOUND
    2.
    发明专利
    PROCESS FOR PRODUCING CYCLIC N-HYDROXYIMIDE COMPOUND 未知

    公开(公告)号：CA2563269A1

    公开(公告)日：2005-11-24

    申请号：CA2563269

    申请日：2005-03-28

    Applicant: DAICEL CHEM

    Inventor： KAJIKAWA YASUTERU

    IPC: C07D207/46 ,  C07D209/48 ,  C07D211/94 ,  C07D223/10 ,  C07D309/32 ,  C07D487/04

    Abstract: A cyclic polycarboxylic anhydride, a polycarboxylic acid, or a mixture of these is reacted with hydroxylamine or a salt thereof in an organic solvent under dehydrating conditions to obtain the corresponding cyclic N-hydroxyimi de compound. The cyclic polycarboxylic anhydride may be succinic anhydride, glutaric anhydride, etc. The polycarboxylic acid may be succinic acid, glutaric acid, adipic acid, etc. It is preferable in this method that an organic solvent capable of undergoing azeotropy with water be used as all or part of the reaction solvent and the reaction be conducted while the water present in the reaction system is kept being removed by azeotropy with the organic solvent. According to the method, a cyclic N-hydroxyimide compound c an be produced in a satisfactory yield from either a cyclic polycarboxylic anhydride or a polycarboxylic acid.

    4.
    发明专利
    未知

    公开(公告)号：DE69502336D1

    公开(公告)日：1998-06-10

    申请号：DE69502336

    申请日：1995-05-23

    Applicant: DAICEL CHEM

    Inventor： KAGOTANI MASAHIRO ,  KAJIKAWA YASUTERU

    IPC: B01J31/26 ,  C07B61/00 ,  C07C51/12 ,  C07C53/08 ,  C07C51/44

    Abstract: By employing a process for the preparation of acetic acid which comprises carbonylating methanol with carbon monoxide in first reactor in the presence of a reaction fluid comprising a rhodium catalyst, methyl iodide, an iodide salt, methyl acetate and water, while continuously withdrawing the reaction fluid from the first reactor and introducing it into a flash zone to separate into an evaporated part and an unevaporated part, characterized in that second reactor is provided between the first reactor and the flash zone and methanol is carbonylated with the carbon monoxide contained in the reaction fluid in a state dissolved therein in the second reactor with a residence time of 7 to 60 seconds at 150 to 220 DEG C, the carbon monoxide contained in the reaction fluid withdrawn from the first reactor in a state dissolved therein can be converted into acetic acid in the second reactor through the same carbonylation as that occurring in the first reactor, which enables effective use and high recovery of carbon monoxide.

    PROCESS FOR PRODUCING CYCLIC N-HYDROXY IMIDE COMPOUNDS
    5.
    发明专利
    PROCESS FOR PRODUCING CYCLIC N-HYDROXY IMIDE COMPOUNDS 未知

    公开(公告)号：CA2563269C

    公开(公告)日：2012-11-06

    申请号：CA2563269

    申请日：2005-03-28

    Applicant: DAICEL CHEM

    Inventor： KAJIKAWA YASUTERU

    IPC: C07D207/46 ,  C07D209/48 ,  C07D211/94 ,  C07D223/10 ,  C07D309/32 ,  C07D487/04

    Abstract: A cyclic polycarboxylic acid anhydride, a polycarboxylic acid, or a mixture of them is allowed to react with hydroxylamine or a salt thereof in an organic solvent under dewatering conditions to yield a corresponding cyclic N-hydroxyimide compound. The cyclic polycarboxylic acid anhydride can be, for example, succinic anhydride or glutaric anhydride. The polycarboxylic acid can be,for example, succinic acid, glutaric acid, or adipic acid. In this process, the reaction is preferably carried out using an organic solvent capable of undergoing azeotropy with water as all or part of a reaction solvent while removing water from the reaction system by azeotropy with the organic solvent. This process produces a cyclic N-hydroxyimide compound in a good yield from any of a cyclic polycarboxylic acid anhydride and a polycarboxylic acid.

    PROCEDIMIENTO PARA PRODUCIR ACIDOS DICARBOXILICOS.
    6.
    发明专利
    PROCEDIMIENTO PARA PRODUCIR ACIDOS DICARBOXILICOS. 未知

    公开(公告)号：ES2310537T3

    公开(公告)日：2009-01-16

    申请号：ES01270515

    申请日：2001-12-07

    Applicant: DAICEL CHEM

    Inventor： ISHII YASUTAKA ,  KAJIKAWA YASUTERU

    IPC: C07C51/31 ,  C07B61/00 ,  C07C55/14 ,  C07C55/21

    Abstract: Un proceso para producir un ácido dicarboxílico por escisión oxidativa de un cicloalcano correspondiente con oxígeno, en el que la reacción se realiza en presencia de un catalizador que comprende un compuesto de imida y un compuesto metálico, estando representado el compuesto de imida por la siguiente Fórmula (I): (Ver fórmula) en la que R 1 y R 2 son iguales o diferentes y cada uno es un átomo de hidrógeno, un átomo de halógeno, un grupo alquilo, un grupo arilo, un grupo cicloalquilo, un grupo hidroxilo, un grupo alcoxi, un grupo carboxilo, un grupo alcoxicarbonilo o un grupo acilo, donde R 1 y R 2 pueden combinarse para formar un doble enlace, un anillo aromático o un anillo no aromático, X es un átomo de oxígeno o un grupo -OR, donde R es un átomo de hidrógeno o un grupo protector de hidroxilo; y en el que uno o dos del grupos imido cíclico N-sustituidos indicados en la fórmula pueden estar formados adicionalmente sobre el R 1 , R 2 o sobre el doble enlace, un anillo aromático o anillo no aromático formado por R 1 y R 2 en condiciones de una temperatura de reacción de 80ºC o mayor, una concentración del cicloalcano en el sistema del 25 al 95% en peso, y una cantidad del compuesto de imida de 0,000001 a 0,01 moles por mol de cicloalcano.

    7.
    发明专利
    未知

    公开(公告)号：DE69502336T2

    公开(公告)日：1998-09-03

    申请号：DE69502336

    申请日：1995-05-23

    Applicant: DAICEL CHEM

    Inventor： KAGOTANI MASAHIRO ,  KAJIKAWA YASUTERU

    IPC: B01J31/26 ,  C07B61/00 ,  C07C51/12 ,  C07C53/08 ,  C07C51/44

    Abstract: By employing a process for the preparation of acetic acid which comprises carbonylating methanol with carbon monoxide in first reactor in the presence of a reaction fluid comprising a rhodium catalyst, methyl iodide, an iodide salt, methyl acetate and water, while continuously withdrawing the reaction fluid from the first reactor and introducing it into a flash zone to separate into an evaporated part and an unevaporated part, characterized in that second reactor is provided between the first reactor and the flash zone and methanol is carbonylated with the carbon monoxide contained in the reaction fluid in a state dissolved therein in the second reactor with a residence time of 7 to 60 seconds at 150 to 220 DEG C, the carbon monoxide contained in the reaction fluid withdrawn from the first reactor in a state dissolved therein can be converted into acetic acid in the second reactor through the same carbonylation as that occurring in the first reactor, which enables effective use and high recovery of carbon monoxide.

    8.
    发明专利
    未知

    公开(公告)号：DE60135380D1

    公开(公告)日：2008-09-25

    申请号：DE60135380

    申请日：2001-12-07

    Applicant: DAICEL CHEM

    Inventor： ISHII YASUTAKA ,  KAJIKAWA YASUTERU

    IPC: C07C51/31 ,  C07B61/00 ,  C07C55/14 ,  C07C55/21

    Abstract: A process of the present invention produces a corresponding dicarboxylic acid by oxidative cleavage of a cycloalkane with oxygen and performs a reaction in the presence of a catalyst including an imide compound and a metallic compound, the imide compound having a cyclic imide skeleton represented by following Formula (I): wherein X is an oxygen atom or an-OR group, and wherein R is a hydrogen atom or a hydroxyl-protecting group, under conditions of a reaction temperature of 80 DEG C or higher and a concentration of the cycloalkane in a system of 21% by weight or more. The imide compound includes, for example, N-hydroxyphthalimide. The amount of the imide compound is, for example, from about 0.000001 to about 0.01 mole per mole of the cycloalkane. In the production of a corresponding dicarboxylic acid by catalytic oxidation of a cycloalkane with oxygen, the present invention can yield the dicarboxylic acid in a high space time yield even using a small amount of the catalyst.

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