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60 条记录 (耗时 0.019 秒)

    Process for the preparation of an alkanesulfonic acid
    1.
    发明授权
    Process for the preparation of an alkanesulfonic acid 有权

    公开(公告)号：US10703715B2

    公开(公告)日：2020-07-07

    申请号：US16121979

    申请日：2018-09-05

    申请人： Evonik Operations GmbH

    发明人： Benjamin Fonfe ,  Chiu Kee Cheung ,  Ali Hartwig

    IPC分类号： C07C303/16 ,  B01J19/00 ,  B01J19/18

    摘要： The present invention relates to a process for the preparation of an alkanesulfonic acid by oxidation of a sulfur containing starting compound with an oxygen containing fluid, wherein the sulfur containing starting compound is provided in a reaction system, comprising a reaction vessel (1) with an expansion vessel (2) on its top, wherein the reaction vessel and the expansion vessel are connected to allow a flow of a fluid stream from the reaction vessel into the expansion vessel.

    Preparation of alkane sulfonic acids and sulfonyl chlorides by oxidation of alkanethiols and dialkyl disulfides
    5.
    发明授权
    Preparation of alkane sulfonic acids and sulfonyl chlorides by oxidation of alkanethiols and dialkyl disulfides 失效
    通过烷基硫醇和二烷基二硫化物的氧化制备烷烃磺酸和磺酰氯

    公开(公告)号：US06124497A

    公开(公告)日：2000-09-26

    申请号：US367297

    申请日：1999-10-22

    申请人： Johnson Chen

    发明人： Johnson Chen

    IPC分类号： C07C303/16 ,  C07C309/04 ,  C07C309/80

    CPC分类号： C07C303/16

    摘要： A process for preparing alkane sulfonic acids and sulfonyl chlorides by oxidation of alkanethiols or dialkyl disulfides in the presence of nitric acid or nitric oxides as a catalyst and in the presence of bromide as a cocatalyst.

    摘要翻译： PCT No.PCT / US97 / 23723 Sec。 371 1999年10月22日第 102（e）1999年10月22日PCT 1997年12月23日PCT公布。 第WO98 / 34914号公报 日期1998年8月13日一种在硝酸或一氧化氮作为催化剂存在下，在溴化物作为助催化剂存在下，通过烷基硫醇或二烷基二硫化物的氧化制备烷烃磺酸和磺酰氯的方法。

    Process for the preparation of 1-aminobenzene-2-sulphonic acids
    7.
    发明授权
    Process for the preparation of 1-aminobenzene-2-sulphonic acids 失效
    制备1-氨基苯-2-磺酸的方法

    公开(公告)号：US4548761A

    公开(公告)日：1985-10-22

    申请号：US502077

    申请日：1983-06-08

    申请人： Martin Michna ,  Hermann Henk

    发明人： Martin Michna ,  Hermann Henk

    IPC分类号： C07C67/00 ,  C07C301/00 ,  C07C303/00 ,  C07C303/16 ,  C07C303/32 ,  C07C309/45 ,  C07C309/46 ,  C07C143/58

    CPC分类号： C07C303/16

    摘要： Process for the preparation of 1-aminobenzene-2-sulphonic acids of the formula ##STR1## wherein R.dbd.H or a substituent andn=1-4,and their salts, in particular their alkali metal salts, by oxidation of compounds of the formula ##STR2## wherein R.sub.1 .dbd.H, a cation, in particular an alkali metal cation, or a radical of the formula ##STR3## characterized in that the oxidation is carried out in a weakly acidic to alkaline pH range. The process can also be carried out as a one-pot process, using the corresponding benzothiazoles as starting materials.

    摘要翻译： 制备式“IMAGE”的1-氨基苯-2-磺酸的方法，其中R = H或取代基，n = 1-4，以及它们的盐，特别是其碱金属盐，通过氧化化合物 其中R1 = H，阳离子，特别是碱金属阳离子或式“IMAGE”的基团，其特征在于氧化在弱酸性至碱性pH范围内进行。 该方法也可以作为一锅法进行，使用相应的苯并噻唑作为起始原料。

    Amino acid isomers, their production and their medicinal use
    8.
    发明授权
    Amino acid isomers, their production and their medicinal use 失效
    氨基酸异构体，其生产及其药用

    公开(公告)号：US4483853A

    公开(公告)日：1984-11-20

    申请号：US434361

    申请日：1982-10-14

    申请人： James F. Collins ,  Kenneth Curry ,  Robert Schwarcz

    发明人： James F. Collins ,  Kenneth Curry ,  Robert Schwarcz

    IPC分类号： C07F5/02 ,  A61K31/195 ,  A61K31/22 ,  A61K31/41 ,  A61P25/00 ,  A61P25/08 ,  C07C67/00 ,  C07C301/00 ,  C07C303/16 ,  C07C309/18 ,  C07D257/04 ,  C07F9/09 ,  C07F9/38 ,  C07F9/40 ,  A61K31/66 ,  A61K31/16 ,  A61K31/19

    CPC分类号： C07F9/3808 ,  C07F9/4006

    摘要： The (-)-D-isomers of compounds of the general formula ##STR1## in which X stands for an acidic radical, especially a radical of phosphonic acid, sulphonic acid, boronic acid or tetrazole,R stands for an alkylene, alkenylene or alkynylene radical with 3 or more carbon atoms, preferably 3 to 6 carbon atoms, or a C.sub.3 to C.sub.7 cycloalkyl radical, andA and B independently of each other stand for a hydrogen atom or a lipophilic radical, especially an ester radical,or salts thereof, or pharmaceutically acceptable bioprecursors thereof, especially (-)-D-aminophosphonopentanoic acid and (-)-D-aminophosphonoheptanoic acid, find use in the treatment of diseases of the central nervous system.The compound aminophosphonoheptanoic acid is also novel as a racemic mixture and the present invention also relates to that compound in racemic form which may be used in the same way as the said (-)-D-isomers.

    摘要翻译： 其中X代表酸性基团，特别是膦酸，磺酸，硼酸或四唑基团的通式为（IMA）的化合物的（ - ） - D-异构体，R代表亚烷基， 具有3个或更多个碳原子，优选3至6个碳原子或C3至C7环烷基的亚烯基或亚链炔基，A和B彼此独立地代表氢原子或亲油基团，特别是酯基，或 其盐或其药学上可接受的生物前体，特别是（ - ） - - - - - - - - - - - - - - - - - - - - 氨基膦酰基庚酸，（ - ） - D - 氨基膦酰庚酸可用于治疗中枢神经系统疾病。 化合物氨基膦酰庚酸也是新的外消旋混合物，本发明还涉及外消旋化合物，其可以以与所述（ - ） - D-异构体相同的方式使用。

    Process for the manufacture of sulphonic acid fluorides
    9.
    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

    申请人： Eric Plattner ,  Christos Comninellis

    发明人： Eric Plattner ,  Christos Comninellis

    IPC分类号： C07C309/80 ,  C07C20060101 ,  C07C19/08 ,  C07C67/00 ,  C07C301/00 ,  C07C303/16 ,  C07C309/65 ,  C07C309/78 ,  C07C309/85 ,  C07C315/02 ,  C07C317/04 ,  C07C317/12 ,  C07C143/70

    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。

    Process for producing surfactant having two head groups and a single tail group per molecule
    10.
    发明授权
    Process for producing surfactant having two head groups and a single tail group per molecule 有权

    公开(公告)号：US11566181B2

    公开(公告)日：2023-01-31

    申请号：US17366879

    申请日：2021-07-02

    申请人： Tarim University

    发明人： Jianhui Jiang ,  Yuan Zhang ,  Yuhui Liu ,  Shiwei Jiang ,  Fei Ren ,  Yanxia Yang ,  Shaozhen Qi

    IPC分类号： C07C327/18 ,  C09K23/00 ,  C07C51/353 ,  C07C67/08 ,  C07C303/16 ,  C07C329/16

    摘要： A process for producing a surfactant having two head groups and a single tail group per molecule, including steps of: producing a compound of Formula (1) from ethanol and carbon disulfide; producing a compound of Formula (2) from a carboxylic acid and bromine; producing a compound of Formula (3) from the compound of Formula (2) and methanol; producing a compound of Formula (4) from the compound of Formula (1) and the compound of Formula (3); and producing a compound of Formula (5) from the compound of Formula (4) by a direct oxidation process or by a peracid oxidation process. The surfactant produced by the process has lower critical micelle concentration and enables a lower surface tension of a liquid as compared with prior surfactants with two head groups per molecule, thereby enabling the amount of surfactant required and thus the cost to be substantially reduced.