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    Process for preparing 3-fluoro-4,6-dichlorotoluene
    31.
    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
    32.
    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
    34.
    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。

    Process for the preparation of p-dichlorobenzene
    35.
    发明授权
    Process for the preparation of p-dichlorobenzene 失效
    制备二氯苯腈的方法

    公开(公告)号：US5210343A

    公开(公告)日：1993-05-11

    申请号：US854121

    申请日：1992-03-19

    Applicant: Franz-Josef Mais ,  Helmut Fiege

    Inventor： Franz-Josef Mais ,  Helmut Fiege

    IPC: B01J27/128 ,  B01J31/02 ,  C07B61/00 ,  C07C17/12 ,  C07C25/08

    CPC classification number: C07C17/12

    Abstract: Dichlorobenzene having an increased p-content and a greatly reduced m-content is obtained by ring chlorination of benzene or chlorobenzene in the presence of Friedel-Crafts catalysts if the reaction is carried out in the presence of co-catalysts of the formula (I) ##STR1## wherein X represents fluorine, chlorine, bromine, trifluoromethyl or pentafluoroethyl andA represents 2 hydrogen atoms or the group --CH.dbd.CH--CH.dbd.CH--.

    Abstract translation: 如果反应在式（I）的助催化剂存在下进行，则在Friedel-Crafts催化剂存在下，通过苯或氯苯的环氯化获得具有增加的p含量和大大降低的m-含量的二氯苯， （I）其中X表示氟，氯，溴，三氟甲基或五氟乙基，A表示2个氢原子或基团-CH = CH-CH = CH-。

    Process for the preparation of 2-chloro-4-nitro-alkylbenzene
    36.
    发明授权
    Process for the preparation of 2-chloro-4-nitro-alkylbenzene 失效
    制备2-氯-4-硝基苯乙烯的方法

    公开(公告)号：US5095157A

    公开(公告)日：1992-03-10

    申请号：US518063

    申请日：1990-05-02

    Applicant: Franz-Josef Mais ,  Helmut Fiege

    Inventor： Franz-Josef Mais ,  Helmut Fiege

    IPC: B01J27/26 ,  B01J31/30 ,  C07B61/00 ,  C07C201/12 ,  C07C205/12

    CPC classification number: C07C201/12

    Abstract: In the preparation of 2-chloro-4-nitro-alkylbenzene by reaction of 4-nitro-alkylbenzene with elemental chlorine or chlorine-releasing compounds in the presence of a Friedel-Crafts catalyst in the liquid phase, particularly high selectivities in respect of the target compounds chlorinated exclusively in the 2-position are achieved if a dibenzo-condensed sulphur heterocycle of the formula ##STR1## having the meanings given in the description for R.sup.1 to R.sup.8, X and n, is used as co-catalyst.

    Abstract translation: 在液相中在Friedel-Crafts催化剂存在下，通过4-硝基 - 烷基苯与元素氯或释放氯的化合物的反应制备2-氯-4-硝基 - 烷基苯，特别是在 如果将具有R1至R8，X和n的描述中给出的含义的具有式（IMA）（II）的二苯并稠合硫杂环作为助催化剂，则可实现仅在2-位氯化的目标化合物。

    Process for the ring chlorination of aromatic hydrocarbons
    37.
    发明授权
    Process for the ring chlorination of aromatic hydrocarbons 失效
    芳烃环化氯工艺

    公开(公告)号：US4990707A

    公开(公告)日：1991-02-05

    申请号：US427264

    申请日：1989-10-26

    Applicant: Franz-Josef Mais ,  Helmut Fiege

    Inventor： Franz-Josef Mais ,  Helmut Fiege

    IPC: B01J31/30 ,  C07B61/00 ,  C07C17/12 ,  C07C25/02 ,  C07C25/18

    CPC classification number: C07C17/12

    Abstract: Aromatic hydrocarbons which are monosubstituted by straight-chain or branched C.sub.1 -C.sub.12 -alkyl or by C.sub.3 -C.sub.8 -cycloalkyl can be chlorinated in the presence of Friedel-Crafts Catalysts in liquid phase on the aromatic ring if cyclic benzo-fused imines or benzo[f]-1,4-thiazepines are used as co-catalysts. This makes it possible to obtain a higher proportion of p-isomers.

    Abstract translation: 通过直链或支链C 1 -C 12烷基或C 3 -C 8 - 环烷基单取代的芳族烃可以在芳环上在液相中的Friedel-Crafts催化剂存在下氯化，如果环状苯并稠合亚胺或苯并[ f] -1,4-硫杂环庚烷用作助催化剂。 这使得可以获得较高比例的对异构体。

    Process for the preparation of 2-chloro-4-methylphenol
    40.
    发明授权
    Process for the preparation of 2-chloro-4-methylphenol 失效
    2-氯-4-甲基苯酚的制备方法

    公开(公告)号：US5847236A

    公开(公告)日：1998-12-08

    申请号：US710990

    申请日：1996-09-25

    Applicant: Franz-Josef Mais ,  Helmut Fiege

    Inventor： Franz-Josef Mais ,  Helmut Fiege

    IPC: B01J31/02 ,  C07C37/62 ,  C07C39/28

    CPC classification number: B01J31/0218 ,  B01J31/26 ,  B01J31/30 ,  C07C37/62

    Abstract: 2-Chloro-4-methylphenol is prepared by reacting 4-methylphenol with a chlorinating agent in the presence of a catalyst system of one or more Lewis acids in a total amount of 0.1-10% by weight and one or more diaryl sulphides in a total amount of 0.1-10% by weight, all based on the amount of 4-methylphenol. The reaction temperature is 0.degree.-100.degree. C. The chlorinating agent is used in an amount of 0.5-1.5 mol per mole of 4-methylphenol. The reaction can be carried out until virtually complete consumption of the 4-methylphenol, high isomeric selectivity and high stage selectivity being observed.

    Abstract translation: 2-氯-4-甲基苯酚是通过使4-甲基苯酚与氯化剂在总量为0.1-10重量％的一种或多种路易斯酸的催化剂体系存在下反应来制备的，一种或多种二芳基硫化物在 总量为0.1-10重量％，均基于4-甲基苯酚的量。 反应温度为0℃-100℃。氯化剂的用量为每摩尔4-甲基苯酚0.5-1.5摩尔。 反应可以进行直到几乎完全消耗4-甲基苯酚，高异构选择性和高阶段选择性被观察到。

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