Process for the preparation of fluorobenzenes
    2.
    发明授权
    Process for the preparation of fluorobenzenes 失效
    制备氟苯的方法

    公开(公告)号:US5264094A

    公开(公告)日:1993-11-23

    申请号:US849059

    申请日:1992-04-24

    CPC分类号: C07C201/12 C07C17/361

    摘要: Process for the preparation of fluorobenzenes having at least one hydrogen atom as ring substituent and, optionally, further substituents, which, independently of each other, can be chlorine, bromine, nitro, hydroxyl, C.sub.1 -C.sub.3 -alkoxy or C.sub.1 -C.sub.3 -alkyl, the number of nitro groups being not more than 2 and the number of hydroxyl groups and alkoxy groups being not more than 3 in each case, by heating the corresponding benzaldehydes, substituted by at least one flourine atom, in the presence of a catalyst, characterized in that the reaction product is immediately removed from the reaction zone.

    摘要翻译: PCT No.PCT / EP90 / 01762 Sec。 371日期:1992年4月24日 102(e)日期1992年4月24日PCT 1990年10月18日PCT PCT。 公开号WO91 / 06518 日期:1991年5月16日。具有至少一个氢原子作为环取代基的氟苯的制备方法和任选的另外的取代基,其彼此独立地可以是氯,溴,硝基,羟基,C 1 -C 3 - 烷氧基 或C 1 -C 3 - 烷基,硝基数不超过2,羟基和烷氧基的数目在每种情况下不超过3,通过加热相应的由至少一个亮原子取代的苯甲醛,在 催化剂的存在,其特征在于反应产物立即从反应区除去。

    Process for the oxidation of dialkyl esters of 2-hydroxy-ethylphosphonic
acid
    6.
    发明授权
    Process for the oxidation of dialkyl esters of 2-hydroxy-ethylphosphonic acid 失效
    2-羟基乙酸磷酸二烷基酯氧化方法

    公开(公告)号:US5210259A

    公开(公告)日:1993-05-11

    申请号:US859416

    申请日:1992-05-22

    CPC分类号: C07F9/657181 C07F9/4006

    摘要: A process for the preparation of diesters of carboxymethylphosphonic acid of the formula: (RO).sub.2 P(O)CH.sub.2 CO.sub.2 H, in which R is a straight-chain or branched alkyl radical having 1 to 20 carbon atoms, a cycloaliphatic radical having 5 to 8 carbon atoms, a phenyl or naphthyl radical which can be substituted, an aralkyl radical having 7 to 10 carbon atoms, or in which the (RO).sub.2 P group forms a ring having 2 to 5 carbon atoms which can be substituted, characterized in that dialkyl ester of 2-hydroxyethylphosphonic acid of the formula (RO).sub.2 P(O)CH.sub.2 CH.sub.2 OH, in which R has the abovementioned meaning, is reacted with oxygen in the presence of water and a catalyst which contains at least one metal selected from the platinum metals group.

    摘要翻译: PCT No.PCT / EP90 / 01980 Sec。 371日期:1992年5月22日 102(e)日期1992年5月22日PCT 1990年11月20日PCT PCT。 第WO91 / 08210号公报 日期:1991年6月13日。一种制备下式的羧甲基膦酸二酯的方法:(RO)2P(O)CH 2 CO 2 H,其中R是具有1至20个碳原子的直链或支链烷基, 具有5至8个碳原子的脂环族基团,可被取代的苯基或萘基,具有7至10个碳原子的芳烷基,或其中(RO)2P基团形成具有2至5个碳原子的环,其可以是 其特征在于,式(RO)2 P(O)CH 2 CH 2 OH的2-羟乙基膦酸的二烷基酯(其中R具有上述含义)在水和催化剂的存在下与氧反应,所述催化剂含有至少一种金属 选自铂金属组。

    Process for the isomerization of halogenated thiophenes
    7.
    发明授权
    Process for the isomerization of halogenated thiophenes 失效
    卤代噻吩异构化的方法

    公开(公告)号:US4604470A

    公开(公告)日:1986-08-05

    申请号:US737179

    申请日:1985-05-23

    IPC分类号: C07D333/28

    CPC分类号: C07D333/28

    摘要: The invention relates to a process for the isomerization of halogenated thiophenes on zeolite catalysts. In this manner, in particular, 2-chlorothiophene is isomerized to 3-chlorothiophene and 2-bromothiophene is isomerized to 3-bromothiophene. Particularly suitable zeolites are synthetic zeolites of the pentasil, mordenite or faujasite type in their acid form.

    摘要翻译: 本发明涉及在沸石催化剂上异构化卤代噻吩的方法。 以这种方式,特别地,2-氯噻吩异构化为3-氯噻吩,2-溴噻吩异构化为3-溴噻吩。 特别合适的沸石是其酸形式的pentasil,丝光沸石或八面沸石类型的合成沸石。