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    Process for preparing 3-fluoro-4,6-dichlorotoluene
    21.
    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
    22.
    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
    23.
    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
    24.
    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
    25.
    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
    26.
    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 N,N-diaryl-ureas
    27.
    发明授权
    Process for the preparation of N,N-diaryl-ureas 失效
    制备N，N-二芳基脲的方法

    公开(公告)号：US4820871A

    公开(公告)日：1989-04-11

    申请号：US105856

    申请日：1987-10-07

    Applicant: Wolfram Kissener ,  Joachim Franke ,  Helmut Fiege ,  Karlfried Wedemeyer

    Inventor： Wolfram Kissener ,  Joachim Franke ,  Helmut Fiege ,  Karlfried Wedemeyer

    IPC: C07C275/28 ,  B01J27/16 ,  C07B61/00 ,  C07C273/18 ,  C07C127/19

    CPC classification number: C07C273/1827

    Abstract: N,N-Diaryl-ureas of the formulaR.sup.1 --NR.sup.2 --CO--NH--R.sup.3whereinR.sup.1 and R.sup.2 denote aryl andR.sup.3 denotes alkyl, aralkyl or aryl, can be prepared by a process in which a diarylamine of the formulaR.sup.1 --NH--R.sup.2is reacted with an isocyanate of the formulaR.sup.3 --NCOwherein R.sup.1, R.sup.2 and R.sup.34 have the above meaning, in the presence of acid compounds and in the presence or absence of an inert solvent and/or diluent at elevated temperature.

    Abstract translation: 式R 1 -R 2 -CO-NH-R 3的N，N-二芳基脲其中R 1和R 2表示芳基，R 3表示烷基，芳烷基或芳基，可以通过其中式R 1 -NH -R2与式R3-NCO的异氰酸酯反应，其中R 1，R 2和R 34具有上述含义，在酸性化合物的存在下和在惰性溶剂和/或稀释剂的存在或不存在下，在升高的温度下反应。

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