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    Process for the preparation of arylglyoxylic acids
    12.
    发明授权
    Process for the preparation of arylglyoxylic acids 失效
    芳基乙醛酸的制备方法

    公开(公告)号：US4221719A

    公开(公告)日：1980-09-09

    申请号：US62846

    申请日：1979-08-01

    Applicant: Helmut Fiege ,  Karlfried Wedemeyer

    Inventor： Helmut Fiege ,  Karlfried Wedemeyer

    IPC: C07C59/84 ,  B01J23/00 ,  B01J23/62 ,  B01J27/00 ,  B01J27/25 ,  B01J31/00 ,  C07B61/00 ,  C07C51/00 ,  C07C51/235 ,  C07C51/255 ,  C07C67/00 ,  C07D317/06 ,  C07C51/42

    CPC classification number: C07C51/235 ,  C07C51/255

    Abstract: Process for the preparation of an arylglyoxylic acid of the formula Ar--CO--COOH, wherein Ar is optionally substituted aryl, which process comprises oxidizing the corresponding arylethane-1,2-diol of the formula ##STR1## with oxygen or a gas containing molecular oxygen, in an aqueous alkaline medium and in the presence of a platinum-group metal catalyst and, as an activator, a material selected from lead, lead compounds, bismuth and bismuth compounds, at a temperature of up to the boiling point of the reaction mixture; e.g. phenylglyoxylic acid is produced from phenylethane-1,2-glycol preferably using platinum activated with lead, bismuth, or compounds thereof.

    Abstract translation: 制备式Ar-CO-COOH的芳基乙醛酸的方法，其中Ar是任选取代的芳基，该方法包括用式（I）氧化相应的式（I）的芳基乙烷-1,2-二醇与氧或 含有分子氧的气体，在含水碱性介质中，在铂族金属催化剂存在下，作为活化剂，选自铅，铅化合物，铋和铋化合物的材料，在最高沸点 点反应混合物; 例如 优选使用由铅，铋或其化合物活化的铂，由苯乙烷-1,2-二醇制备苯基乙醛酸。

    Process for the purification of phosphorus oxychloride
    15.
    发明授权
    Process for the purification of phosphorus oxychloride 失效
    磷酰氯的纯化方法

    公开(公告)号：US5911962A

    公开(公告)日：1999-06-15

    申请号：US113988

    申请日：1998-07-10

    Applicant: Franz-Josef Mais ,  Helmut Fiege

    Inventor： Franz-Josef Mais ,  Helmut Fiege

    IPC: C01B25/10

    CPC classification number: C01B25/10

    Abstract: Impure POCl.sub.3 is purified by distillation in the presence of high-boiling nitrogen compounds from the group consisting of the substituted pyridines and pyrimidines, the open-chain and cyclic aliphatic amines, the open-chain and cyclic amidines, the guanidines and the aromatic amines.

    Abstract translation: 不饱和POCl 3在高沸点氮化合物存在下，由取代的吡啶和嘧啶，开环和环状脂族胺，开链和环状脒，胍和芳族胺组成的组中进行蒸馏纯化。

    Process for preparing 3-fluoro-4,6-dichlorotoluene
    17.
    发明授权
    Process for preparing 3-fluoro-4,6-dichlorotoluene 失效
    制备3-氟-4,6-二氯甲苯的方法

    公开(公告)号：US5684217A

    公开(公告)日：1997-11-04

    申请号：US572229

    申请日：1995-12-13

    Applicant: Franz-Josef Mais ,  Werner Bussmann ,  Helmut Fiege

    Inventor： Franz-Josef Mais ,  Werner Bussmann ,  Helmut Fiege

    IPC: B01J27/128 ,  B01J31/02 ,  C07B61/00 ,  C07C17/12 ,  C07C25/13 ,  C07C22/00

    CPC classification number: C07C17/12

    Abstract: 3-Fluoro-4,6-dichlorotoluene can be prepared in a particularly favourable manner by first chlorinating 3-fluorotoluene at low temperature in the presence of a Friedel-Crafts catalyst and a heterocyclic cocatalyst to give a mixture containing 3-fluoro-4-chlorobenzene and 3-fluoro-6-chlorobenzene, and subsequently, without intermediate isolation, further chlorinating this mixture, at higher temperature, after addition of further Friedel-Crafts catalyst and further heterocyclic cocatalyst, to give 3-fluoro-4,6-dichlorotoluene.

    Abstract translation: 3-氟-4,6-二氯甲苯可以以特别有利的方式通过在Friedel-Crafts催化剂和杂环助催化剂的存在下在低温下首先氯化3-氟甲苯，得到含有3-氟-4- 氯苯和3-氟-6-氯苯，随后在不进行中间分离的情况下，在加入另外的Friedel-Crafts催化剂和其它杂环助催化剂之后，在较高温度下进一步氯化该混合物，得到3-氟-4,6-二氯甲苯 。

    Process for the preparation of 2-nitrobenzaldehydes
    18.
    发明授权
    Process for the preparation of 2-nitrobenzaldehydes 失效
    2-硝基苯甲醛的制备方法

    公开(公告)号：US5576463A

    公开(公告)日：1996-11-19

    申请号：US398228

    申请日：1995-03-03

    Applicant: Albert Schnatterer ,  Helmut Fiege

    Inventor： Albert Schnatterer ,  Helmut Fiege

    IPC: C07C201/12 ,  C07C205/44 ,  C07C45/32

    CPC classification number: C07C201/12

    Abstract: The new process for the preparation of 2-nitrobenzaldehydes of the general formula ##STR1## in which X.sub.1 and X.sub.2 either independently of one another represent hydrogen or halogen or one of the substituents represents nitro and the other substituent then represents hydrogen,by oxidation of 2-nitrotoluenes of the general formula ##STR2## in which X.sub.1 and X.sub.2 have the meaning indicated above is characterized in that the oxidation with oxygen or an oxygen-containing gas is carried out in the presence of at least one alkoxyalkylamine as a solvent and in the presence of strong bases.

    Abstract translation: 制备通式（I）的2-硝基苯甲醛的新方法，其中X 1和X 2彼此独立地表示氢或卤素或一个取代基表示硝基，而另一个取代基则代表氢，由 其中X1和X2具有上述含义的通式为“IMAGE”（II）的2-硝基甲苯的氧化特征在于用氧或含氧气体进行氧化在至少一种烷氧基烷基胺 作为溶剂，并存在强碱。

    Process for decreasing the halogen content of polyhalogenated aromatics
    20.
    发明授权
    Process for decreasing the halogen content of polyhalogenated aromatics 失效
    减少多卤代芳族化合物卤素含量的方法

    公开(公告)号：US5292975A

    公开(公告)日：1994-03-08

    申请号：US21835

    申请日：1993-02-23

    Applicant: Heinrich Schrage ,  Helmut Fiege

    Inventor： Heinrich Schrage ,  Helmut Fiege

    IPC: B01J23/40 ,  C07B61/00 ,  C07C17/00 ,  C07C17/12 ,  C07C25/02 ,  C07C25/22

    CPC classification number: C07C17/00

    Abstract: When the halogen content of polyhalogenated aromatics is decreased by reaction with monohalogenated and/or non-halogenated aromatics in the gas phase, good yields and significantly improved catalyst service lives are achieved if the reaction is carried out in the presence of a catalyst and in the presence of a hydrogen halide.

    Abstract translation: 当通过在气相中与单卤代和/或非卤代芳族化合物反应来降低多卤代芳族化合物的卤素含量时，如果反应在催化剂存在下进行，则可获得良好的产率和显着改善的催化剂使用寿命 存在卤化氢。

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