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62 条记录 (耗时 0.014 秒)

    Fluorination of trichloromethyl groups
    1.
    发明授权
    Fluorination of trichloromethyl groups 失效
    三氯甲基氟化

    公开(公告)号：US4079089A

    公开(公告)日：1978-03-14

    申请号：US731475

    申请日：1976-10-12

    申请人： Erich Klauke

    发明人： Erich Klauke

    IPC分类号： B01J27/00 ,  C07B61/00 ,  C07C17/00 ,  C07C17/20 ,  C07C22/08 ,  C07C25/02 ,  C07C67/00 ,  C07C25/14

    CPC分类号： C07C17/206

    摘要： A process for the preparation of a trichloromethyl-trifluoromethylbenzene of the formula ##STR1## wherein R.sup.1 and R.sup.2 are independently selected from the group consisting of hydrogen, fluorine, chlorine and bromine which comprises contacting a bis-(trichloromethyl)-benzene of the formula ##STR2## wherein R.sup.1 and R.sup.2 have the previously assigned significance with less than 6 mols of anhydrous hydrogen fluoride in the presence of a halogen transfer catalyst.

    摘要翻译： 一种制备下式的三氯甲基 - 三氟甲基苯的方法，其中R 1和R 2独立地选自氢，氟，氯和溴，其包括将式（I）的双 - （三氯甲基） - 苯 其中R1和R2在卤素转移催化剂存在下具有小于6摩尔的无水氟化氢的预先指定的含义。

    Method for making o- and p- haloalkyl styrenes
    2.
    发明授权
    Method for making o- and p- haloalkyl styrenes 失效
    制备邻 - 和对 - 卤代烷基苯乙烯的方法

    公开(公告)号：US4045501A

    公开(公告)日：1977-08-30

    申请号：US601870

    申请日：1975-08-04

    申请人： Thomas A. Bianchi

    发明人： Thomas A. Bianchi

    IPC分类号： C07C17/14 ,  C07C17/25 ,  C07C22/04 ,  C07C25/14

    CPC分类号： C07C17/25 ,  C07C17/14 ,  C07C17/32 ,  C07C22/04

    摘要： A method for making o- and p- halomethyl styrenes which comprises reacting an ethyl benzene, paraformaldehyde and hydrogen halide, treating the reaction product with a halogen, and dehydrohalogenating the resulting o- and p- halomethyl (1-haloethyl) benzenes at an elevated temperature using as dehydrohalogenating agent an amine acceptor of the generic formula: ##STR1## WHEREIN R is an alkyl group of 1 to 6 carbon atoms, n is an integer having a value of from 1 to 5, and at least one alkyl group is attached to a carbon atom adjacent to the nitrogen atom and when n is more than 1, the alkyl groups may be the same or different groups, and recovering a mixture of o- and p- halomethyl styrenes.

    摘要翻译： 一种制备邻 - 和对 - 卤代甲基苯乙烯的方法，包括使乙苯，多聚甲醛和卤化氢反应，用卤素处理反应产物，并将所得的邻 - 和对 - 卤代甲基（1-卤代乙基）苯在升高的 使用作为脱卤化氢剂的胺受体的通式为：其中R为1至6个碳原子的烷基，n为1至5的整数，并且至少有一个烷基被连接 与氮原子相邻的碳原子，并且当n大于1时，烷基可以相同或不同，并且回收邻卤代和对卤代甲基苯乙烯的混合物。

    Pyrolysis of 2-sulfochloride benzoates
    3.
    发明授权
    Pyrolysis of 2-sulfochloride benzoates 失效
    2-磺酰氯苯甲酸酯的热解

    公开(公告)号：US4042600A

    公开(公告)日：1977-08-16

    申请号：US620281

    申请日：1975-10-07

    申请人： Carmine A. DiPippo

    发明人： Carmine A. DiPippo

    IPC分类号： C07D275/06 ,  C07D327/04 ,  C07C19/02 ,  C07C25/14

    CPC分类号： C07D275/06 ,  C07D327/04

    摘要： Ortho-sulfobenzoic anhydride is synthesized by pyrolysis of the 2-sulfochloride benzoates. The benzoate intermediates are readily prepared by reacting either the esters of dithiodibenzoic acid with chloride water or the 2-diazonium chloride benzoates with sulfur dioxide. The invention also provides for the total synthesis of saccharin, free of bitter tasting contaminants, from such reactants, the ultimate step in such synthesis being the ammonolysis of the o-sulfobenzoic anhydride.

    摘要翻译： 邻磺基苯甲酸酐通过2-磺酰氯苯甲酸酯的热解合成。 苯甲酸酯中间体可以通过使二硫代二苯甲酸的酯与氯化物水或2-重氮氯化苯甲酸酯与二氧化硫反应来制备。 本发明还提供了从这种反应物中没有苦味污染物的糖精的总合成，这种合成中的最终步骤是邻磺基苯甲酸酐的氨解。

    Continuous process for preparing derivatives of benzene with fluorinated side chains from the corresponding chlorine compounds
    6.
    发明授权
    Continuous process for preparing derivatives of benzene with fluorinated side chains from the corresponding chlorine compounds 失效
    用相应的氯化合物制备具有氟化侧链的苯衍生物的连续方法

    公开(公告)号：US3966832A

    公开(公告)日：1976-06-29

    申请号：US521894

    申请日：1974-11-07

    申请人： Rudolf Lademann ,  Helmut Lindner ,  Thomas Martini ,  Peter Paul Rammelt

    发明人： Rudolf Lademann ,  Helmut Lindner ,  Thomas Martini ,  Peter Paul Rammelt

    IPC分类号： C07C17/00 ,  C07C17/20 ,  C07C22/08 ,  C07C51/62 ,  C07C63/70 ,  C07C67/00 ,  G03F7/038 ,  C07C25/14

    CPC分类号： C07C17/206 ,  C07C51/60 ,  C07C51/62 ,  C07C51/64

    摘要： Preparation of derivatives of benzene containing CF.sub.3 groups from the corresponding compounds containing CCl.sub.3 groups (e.g. trichloromethyl benzene) is carried out continuously with excellent yield rates by reaction with liquid hydrogen fluoride in an autoclave above 80.degree.C, (which latter exceeds the stoichiometric proportion by at least 25 mole %). The reactants are fed continuously into the autoclave. The reaction mixture preferably becomes pressurized to at least 20 atmospheres and homogeneous after having reached a certain filling level. The reaction mixture is thereafter withdrawn proportionally to its feeding-in rate. The mixture may be conveyed through one or several additional autoclaves with the final withdrawal of the reaction mixture being out from the terminal autoclave of this cascade. The fluorination products are well known starting and inermediate products for the preparation of dyestuffs and pesticidal compositions.

    摘要翻译： 通过与高于80℃的高压釜中的液体氟化氢反应（其后者超过化学计量比例）通过与高于80℃的高压釜反应而以优异的产率连续进行来自相应的含有CCl 3基团的化合物（例如三氯甲基苯）的含CF 3基团的苯衍生物 至少25摩尔％）。 反应物连续进料到高压釜中。 反应混合物优选在达到一定的填充水平之后被加压至至少20个大气压并均匀。 然后将反应混合物与其进料速率成比例地取出。 混合物可以通过一个或几个另外的高压釜输送，反应混合物最终从该级联的终端高压釜中排出。 氟化产物是众所周知的用于制备染料和杀虫组合物的起始和中间产物。

    Preparation of haloalkyl aromatic hydrocarbons
    7.
    发明授权
    Preparation of haloalkyl aromatic hydrocarbons 失效
    卤代烷基芳烃的制备

    公开(公告)号：US3875249A

    公开(公告)日：1975-04-01

    申请号：US34992773

    申请日：1973-04-11

    申请人： ETHYL CORP

    发明人： NELSON GUNNER E

    IPC分类号： C07C17/26 ,  C07C17/32 ,  C07C25/14

    CPC分类号： C07C17/266 ,  C07C17/32 ,  C07C2531/14 ,  C07C22/04

    摘要： Process for alkylating an aromatic hydrocarbon by reacting a haloalkane with either benzene or an alkyl benzene and conducting the reaction in the presence of an alkylaluminum halide catalyst without deliberately adding heat to elevate the temperature of the reaction.

    摘要翻译： 通过使卤代烷烃与苯或烷基苯反应并在卤化烷基铝催化剂存在下进行反应而不刻意加热以提高反应温度来使芳族烃烷基化的方法。

    Process for separating mono chloromethylation and di-chloromethylation product of a c10 or lower aromatic hydrocarbon
    8.
    发明授权
    Process for separating mono chloromethylation and di-chloromethylation product of a c10 or lower aromatic hydrocarbon 失效
    分离C10或更低芳烃的单氯氯丙烯和二氯甲烷化产物的方法

    公开(公告)号：US3755473A

    公开(公告)日：1973-08-28

    申请号：US3755473D

    申请日：1971-09-03

    申请人： EXXON RESEARCH ENGINEERING CO

    发明人： CIER H ,  WILDER H

    IPC分类号： C07C17/392 ,  C07C22/04 ,  C07C25/14

    CPC分类号： C07C22/04 ,  C07C17/392

    摘要： A PROCESS FOR SEPARATING THE MONO-CHLOROMETHYLATION FROM THE DI-CHLOROMETHYLATION PRODUCTS OF AROMATIC HYDROCARBONS OF C10 OR LOWER WHOSE MONO-CHLOROMETHYLATION PRODUCTS HAVE A MELTING POINT OF ABOUT 25*C. OR HIGHER. A CHLOROMETHYLATION REACTION MIXTURE IS HEATED WITH A C6 TO C9 AROMATIC HYDROCARBON IN THE LIQUID PHASE TO DISSOLVE THE MONO-CHLOROMETHYLATION AND DI-CHLOROMETHYLATION PRODUCTS AND IS THEN COOLED TO PRECIPITATE SOLID DI-CHLOROMETHYLATION PRODUCT. SOLID DI-CHLOROMETHYLATION PRODUCT IS SEPARATED FROM THE AROMATIC HYDROCARBON SOLUTION AND WASHED WITH A C5 TO C8 SATURATED HYDROCARBON IN THE LIQUID PHASE TO HIGH PURITY. THE AROMATIC HYDROCARBON SOLUTION IS VAPORIZED TO LEAVE A RESIDUE INCLUDING THE MONO-CHLOROMETHYLATED PRODUCT. THE RESIDUE IS HEATED WITH A SATURATED C5 TO C8 HYDROCARBON N THE LIQUID PHASE TO DISSOLVE MONO-CHLOROMETHYLATED PRODUCT THEREIN. THEN THE HOT SATURATED HYDROCARBON S SEPARATED FROM UNDISSOLVED SOLIDS AND IS COOLED TO PRECIPITATE SOLID MONO-CHLOROMETHYLATED PRODUCT, WHICH IS THEN RECOVERED FROM THE SATURATED HYDROCARBON.

    Process for the preparation of aromatic trifluoromethyl compounds of the benzene series
    9.
    发明授权
    Process for the preparation of aromatic trifluoromethyl compounds of the benzene series 失效
    苯乙烯系列芳香三氟甲磺酸化合物的制备方法

    公开(公告)号：US3742074A

    公开(公告)日：1973-06-26

    申请号：US3742074D

    申请日：1970-12-29

    申请人： HOECHST AG

    发明人： HERMANN H ,  LINDNER H

    IPC分类号： C07C17/20 ,  C07C25/14

    CPC分类号： C07C17/206 ,  C07C22/08 ,  C07C25/13

    摘要： The preparation of trifluoromethyl compounds of the benzene series from the trichloromethyl derivatives and hydrogen fluoride is improved by using hexamethylene tetramine as a catalyst. The products are useful and versatile organic intermediates for dyestuffs.

    摘要翻译： 通过使用六亚甲基四胺作为催化剂，可以提高三氯甲基衍生物和氟化氢的苯系三氟甲基化合物的制备。 该产品是有用的和通用的染料有机中间体。