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11 条记录 (耗时 0.019 秒)

    Process for preparing perfluoroalkyl bromides
    2.
    发明授权
    Process for preparing perfluoroalkyl bromides 失效
    制备全氟烷基溴化物的方法

    公开(公告)号：US5688379A

    公开(公告)日：1997-11-18

    申请号：US424518

    申请日：1995-10-24

    申请人： Yasuhisa Furutaka ,  Tatsuo Nakada ,  Kazuhiro Shimokawa ,  Yorisato Hisanaga ,  Souichi Ueda

    发明人： Yasuhisa Furutaka ,  Tatsuo Nakada ,  Kazuhiro Shimokawa ,  Yorisato Hisanaga ,  Souichi Ueda

    IPC分类号： C07C17/20 ,  C07C17/00

    CPC分类号： C07C17/204

    摘要： The present invention provides a process for preparing a perfluoroalkyl bromide characterized by reacting a perfluoroalkyl iodide represented by the formula C.sub.n F.sub.2n+1 I wherein n is an integer of 6 to 10 with bromine in a light-transmitting reactor with exposure to light and heating at 120.degree. to 180.degree. C. while simultaneously removing IBr resulting as a by-product by separation of a layer.

    摘要翻译： PCT No.PCT / JP93 / 01738 Sec。 371日期1995年10月24日第 102（e）日期1995年10月24日PCT 1993年11月30日PCT公布。 公开号WO94 / 12453 日期：1994年6月9日本发明提供了制备全氟烷基溴的方法，其特征在于使具有式C n F 2n + 1 I表示的全氟烷基碘（其中n为6至10的整数）与溴在具有光照的透光反应器中反应 并在120〜180℃下加热，同时除去作为副产物产生的IBr，通过分层。

    Process for preparing a trifluoromethylbenzene derivative
    5.
    发明授权
    Process for preparing a trifluoromethylbenzene derivative 失效
    三氟甲基苯衍生物的制备方法

    公开(公告)号：US4493800A

    公开(公告)日：1985-01-15

    申请号：US506358

    申请日：1983-06-21

    申请人： Yasuhisa Furutaka ,  Sadamu Ishii

    发明人： Yasuhisa Furutaka ,  Sadamu Ishii

    IPC分类号： C07C255/49 ,  C07C120/04

    CPC分类号： C07C255/00 ,  C07C253/14

    摘要： A process for preparing a trifluoromethylbenzonitrile derivative of the formula: ##STR1## wherein X is hydrogen, lower alkyl, halogenated lower alkyl, lower alkoxy, nitro, hydroxyl, amino, cyano, carboxyl or sulfon which comprises reacting trifluoromethylhalogenobenzene of the formula: ##STR2## wherein X is as defined above, and Y is halogen with copper (I) cyanide in a solvent selected from the group consisting of hexamethylphosphoric triamide, N-methylpyrrolidone and a mixture thereof in the presence of a catalyst selected from the group consisting of (A) bromine, (B) iodine, (C) a combination of bromine or iodine and metallic copper and (D) copper (II) bromide, by which process the compound (I) is prepared in a good yield, and by-products are produced in a lower yield than the conventional processes.

    摘要翻译： 制备下式的三氟甲基苄腈衍生物的方法：其中X是氢，低级烷基，卤代低级烷基，低级烷氧基，硝基，羟基，氨基，氰基，羧基或磺酸，其包括使式 ：其中X如上所定义，Y是在选自六甲基磷酰三胺，N-甲基吡咯烷酮及其混合物的溶剂中的氰化铜（I）的卤素，所述溶剂在选择的催化剂存在下 由（A）溴，（B）碘，（C）溴或碘的组合和金属铜和（D）溴化铜（II）组成的组，通过该方法制备化合物（I） 产率和副产物的产量低于常规方法。

    Process for preparing fluoroalcohol
    7.
    发明授权
    Process for preparing fluoroalcohol 失效
    制备氟代醇的方法

    公开(公告)号：US5264637A

    公开(公告)日：1993-11-23

    申请号：US770751

    申请日：1991-10-04

    申请人： Tutomu Yoshida ,  Kunitada Tanaka ,  Yasumichi Chiba ,  Yasuhisa Furutaka ,  Yukio Homoto

    发明人： Tutomu Yoshida ,  Kunitada Tanaka ,  Yasumichi Chiba ,  Yasuhisa Furutaka ,  Yukio Homoto

    IPC分类号： C07C29/124 ,  C07C31/40 ,  C07C31/38

    CPC分类号： C07C31/40 ,  C07C29/124

    摘要： A fluoroalcohol of the formulaRf(CH.sub.2 CH.sub.2 OH)n (1)is prepared by the following three kinds of processes:(a) by contacting a betaine compound with a halide compound of the formulaRf(CH.sub.2 CH.sub.2 X)n (2) to obtain an intermediate compound and subjecting the intermediate compound to hydrolysis,(b) by contacting a betaine compound and water in the presence of an organic solvent with a halide compound of the formulaRf(CH.sub.2 CH.sub.2 X)n (2), or(c) by contacting a betaine type surfactant and water with a halide compound of the formulaRf(CH.sub.2 CH.sub.2 X)n (2), wherein Rf is C.sub.2.about.13 fluoroalkyl or C.sub.2.about.13 fluoroalkylene group, X is iodine or bromine, n is 1 when Rf is fluoroalkyl group and n is 2 when Rf is fluoroalkylene group.

    摘要翻译： 通过以下三种方法制备式Rf（CH 2 CH 2 OH）n（1）的氟代醇：（a）通过使甜菜碱化合物与式Rf（CH 2 CH 2 X）n（2）的卤化合物接触，得到中间体 （b）通过使有机溶剂存在下的甜菜碱化合物和水与式Rf（CH2CH2X）n（2）的卤化物化合物接触，或（c）通过使甜菜碱 式（2）中卤素化合物，其中R f是C 2-6烷基或C 2-6不同的氟代亚烷基，X是碘或溴，当Rf是氟烷基时n是1，n是1 当Rf为氟代亚烷基时为2。

    Process for preparing halogenated alkane
    8.
    发明授权
    Process for preparing halogenated alkane 失效
    制备卤代烷烃的方法

    公开(公告)号：US4929318A

    公开(公告)日：1990-05-29

    申请号：US247354

    申请日：1988-09-21

    申请人： Yasuhisa Furutaka ,  Hirokazu Aoyama ,  Tsunetoshi Honda

    发明人： Yasuhisa Furutaka ,  Hirokazu Aoyama ,  Tsunetoshi Honda

    IPC分类号： C07C19/08 ,  C07C17/00 ,  C07C17/23 ,  C07C19/10 ,  C07C67/00

    CPC分类号： C07C17/23

    摘要： A halogenated alkane of the formulaR--CHXY (I)wherein R is a trifluoromethyl group, a chlorodifluoromethyl group, a dichlorofluoromethyl group, a chlorofluoromethyl group, a difluoromethyl group, a fluoromethyl group or a 2-chloro-1,1,2,2-tetrafluoroethyl group, and X and Y are the same or different and a hydrogen atom, a chlorine atom or a fluorine atom can be prepared at a high yield by reducing a halogenated alkane of the formula:R--CClXY (II)wherein R, X and Y are the same as defined above with the irradiation of light having a wavelength of not longer than 300 nm in an oxygen-free reaction atmosphere in the presence of 3 to 10 moles of an alcohol per mole of the halogenated alkane of the formula (II) or in the presence of 0.1 to 10 moles of an alcohol per mole of the halogenated alkane of the formula (II) and an alkali.