Process for the preparation of 5-nitro-1,4-naphthoquinone
    1.
    发明授权
    Process for the preparation of 5-nitro-1,4-naphthoquinone 失效
    5-硝基-1,4-萘醌的制备方法

    公开(公告)号:US4880571A

    公开(公告)日:1989-11-14

    申请号:US921918

    申请日:1986-10-22

    CPC分类号: C07C201/12 C07C201/14

    摘要: A process for the preparation of 5-nitro-1,4-naphthoquinones of formula ##STR1## wherein R is hydrogen, a C.sub.1 -C.sub.4 alkyl radical or a C.sub.1 -C.sub.4 alkoxy radical, by oxidation of 1-nitronaphthalene or a suitably substituted 1-nitronaphthalene, which process comprises carrying out the reaction with manganese(III) sulfate as oxidizing agent or a mixture of manganese(III) sulfate and cerium sulfate.The maganese(III) sulfate consumed can be regenerated electrolytically with good current yield. The process is environmentally safe, as the oxidizing agent and the solvent, if any, can be reused.

    摘要翻译: 制备式“IMAGE”的5-硝基-1,4-萘醌的方法,其中R是氢,C1-C4烷基或C1-C4烷氧基,通过1-硝基萘的氧化或适当取代的1-硝基萘 该方法包括用硫酸锰(III)作为氧化剂或硫酸锰(III)和硫酸铈的混合物进行反应。 消耗的硫酸锰(III)可以以较好的电流产率电解再生。 该方法是环境安全的,因为氧化剂和溶剂(如果有的话)可以重复使用。

    Process for the manufacture of an aldehyde
    4.
    发明授权
    Process for the manufacture of an aldehyde 失效
    醛的制造方法

    公开(公告)号:US4582942A

    公开(公告)日:1986-04-15

    申请号:US643970

    申请日:1984-08-15

    CPC分类号: C25B1/00 C07C45/28

    摘要: Manufacture of p-tert. butyl-benzaldehyde (TBT) by oxidation with a Mn.sup.3+ salt, which salt is generated by electrochemical oxidation of a Mn.sup.2+ salt, and whereby the chemical oxidation and the electrochemical oxidation are carried out in separate reaction vessels.

    摘要翻译: PCT No.PCT / CH83 / 00145 Sec。 371日期1984年8月15日 102(e)日期1984年8月15日PCT提交1983年12月19日PCT公布。 第WO84 / 02522号公报 日期:1984年7月5日。 通过Mn3 +盐的氧化反应生成叔丁基苯甲醛(TBT),该盐通过Mn2 +盐的电化学氧化而产生,由此化学氧化和电化学氧化在分开的反应容器中进行。

    Electrochemical process for the preparation of benzanthrones and planar,
polycyclic aromatic oxygen-containing compounds
    5.
    发明授权
    Electrochemical process for the preparation of benzanthrones and planar, polycyclic aromatic oxygen-containing compounds 失效
    用于制备苯并蒽和平面,多环芳族含氧化合物的电化学方法

    公开(公告)号:US4394227A

    公开(公告)日:1983-07-19

    申请号:US354109

    申请日:1982-03-02

    IPC分类号: C25B3/00 C25B3/04

    CPC分类号: C25B3/00

    摘要: An electrochemical process for the preparation of benzanthrones and planar, polycyclic aromatic oxygen-containing compounds is described. The process is carried out in an acid medium in an electrolytic cell which is separated by a diaphragm into a cathode compartment and an anode compartment.In the cathode compartment, anthraquinone or an anthraquinone derivative is reduced electrolytically to oxanthrone and the latter is reacted with glycerol to give the corresponding benzanthrone.In the anode compartment, a transition metal ion is simultaneously converted electrolytically from a lower oxidation stage into the next higher oxidation stage. The metal ion of higher valency is then used in the anolyte as an oxidizing agent by means of which the corresponding oxygen-containing compounds are obtained, starting from planar, polycyclic aromatic compounds.

    摘要翻译: 描述了制备苯并蒽和平面,多环芳族含氧化合物的电化学方法。 该方法在由隔膜分隔成阴极室和阳极室的电解池中的酸性介质中进行。 在阴极室中,将蒽醌或蒽醌衍生物电解还原成黄烷酮,后者与甘油反应得到相应的苯醌。 在阳极室中,过渡金属离子同时从较低氧化阶段电解转化为下一个更高的氧化阶段。 然后将高价金属离子用作阳极电解液作为氧化剂,通过该氧化剂从平面多环芳族化合物开始获得相应的含氧化合物。

    Process for the manufacture of sulphonic acid fluorides
    6.
    发明授权
    Process for the manufacture of sulphonic acid fluorides 失效
    制备磺酸氟化物的方法

    公开(公告)号:US4005138A

    公开(公告)日:1977-01-25

    申请号:US504582

    申请日:1974-09-09

    CPC分类号: C07C309/00

    摘要: A process for the manufacture of sulphonic acid fluorides of the formula RSO.sub.2 F, wherein R represents a straight-chain or a branched alkyl or cycloalkyl radical is provided. The process is carried out in liquid hydrogen fluoride and comprises reacting thio compounds of the formula R--S--X, wherein R has the indicated meaning and X is hydrogen or --S--R, with nitrogen dioxide and/or dinitrogen tetroxide. The obtained sulfonic acid fluorides are useful intermediates for the manufacture of a great number of other compounds. By means of electrochemical fluorination they can also be converted into the corresponding perfluoroalkylsulphonic acid fluorides, which can be used as a basis for oil and water repellants.

    摘要翻译: 提供了制备式RSO 2 F的磺酸氟化物的方法,其中R表示直链或支链烷基或环烷基。 该方法在液体氟化氢中进行,并且包括使式R-S-X的硫代化合物与其二氧化氮和/或四氧化二氮反应,其中R具有指定含义,X是氢或-S-R。 得到的磺酸氟化物是制造大量其它化合物的有用中间体。 通过电化学氟化,它们也可以转化为相应的全氟烷基磺酸氟化物,其可以用作防水和防水剂的基础。