Process for the preparation of alkane- and arenesulfonamides
    4.
    发明公开
    Process for the preparation of alkane- and arenesulfonamides 失效
    Verfahren zur Herstellung von Alkan- und Arensulfonamiden。

    公开(公告)号:EP0439687A1

    公开(公告)日:1991-08-07

    申请号:EP90120562.5

    申请日:1990-10-26

    CPC classification number: C07C303/38 C07C311/03

    Abstract: A process for the preparation of alkane- and arenesulfonamides in high purity and yield is provided. Ammonia or alkylamine is reacted under boiling conditions with an alkane- or arenesulfonyl halide in the absence of an added solvent. The heat of reaction is dissipated by the heat of vaporization of the ammonia or alkylamine.

    Abstract translation: 提供了一种以高纯度和高产量制备烷烃和芳烃磺酰胺的方法。 在不存在加入的溶剂的情况下,氨或烷基胺在沸腾条件下与烷烃或芳烃磺酰卤反应。 反应的热量由氨或烷基胺的蒸发热消散。

    Photochemical preparation of 3-(organothio) aldehydes
    5.
    发明公开
    Photochemical preparation of 3-(organothio) aldehydes 失效
    Photochemisches Verfahren zur Herstellung von 3-(有机硫)醛。

    公开(公告)号:EP0417386A1

    公开(公告)日:1991-03-20

    申请号:EP90107565.5

    申请日:1990-04-20

    CPC classification number: C07C319/18 C07C323/22

    Abstract: A process is disclosed for the preparation of 3-­(organothio)aldehydes by reacting a mercaptan with an α, β-unsaturated aliphatic aldehyde under actinic radiation in the absence of an oxygen-containing gas wherein the mercaptan and aldehyde are mixed in substantially equimolar amount and the reaction temperature ranges from about 2° to less than 60°C.

    Abstract translation: 公开了一种制备3-(有机硫)醛的方法,该方法是在不存在含氧气体的情况下,通过在光化辐射下使硫醇与α,β-不饱和脂族醛反应,其中硫醇和醛以基本上等摩尔量混合 反应温度为约2℃至小于60℃。

    Propanone 1,3-disulfonic acid as an esterification catalyst
    6.
    发明公开
    Propanone 1,3-disulfonic acid as an esterification catalyst 失效
    Propanon-1,3-disulfonsäureals Veresterungskatalysator。

    公开(公告)号:EP0333980A1

    公开(公告)日:1989-09-27

    申请号:EP89100500.1

    申请日:1989-01-12

    CPC classification number: C07C69/54

    Abstract: The present invention discloses the use of propanone 1,3-disulfonic acid as an esterification catalyst. This catalyst has a significantly higher reaction rate when compared to conventional esterification catalysts, such as methanesulfonic acid and sulfuric acid.

    Abstract translation: 本发明公开了丙酮1,3-二磺酸作为酯化催化剂的用途。 当与常规酯化催化剂如甲磺酸和硫酸相比时,该催化剂具有显着更高的反应速率。

    Process for the manufacture of high purity linear c4+ alkyl mercaptans
    7.
    发明公开
    Process for the manufacture of high purity linear c4+ alkyl mercaptans 失效
    Verfahren zur Herstellung von sehr reinen C4 + -Alkylmercaptanen

    公开(公告)号:EP0706998A1

    公开(公告)日:1996-04-17

    申请号:EP95110418.1

    申请日:1995-07-04

    CPC classification number: C07C319/06 C07C321/04

    Abstract: Linear C₄+ alkyl mercaptans of high purity are prepared by the reaction of a di-linear(C₄+) alkyl sulfide with hydrogen sulfide at elevated temperature in the presence of an alumina material selected from gamma/eta alumina or gamma/eta alumina impregnated with up to 20% w/w of titania or rhenium oxide.

    Abstract translation: 直链烷基二硫化物通过与H 2 S反应的催化剂转化成相应的硫醇,所述催化剂包含任选地浸渍有至多20重量%的二氧化钛和/或氧化铼的eta /γ氧化铝。

    2,4-pentanedionemonosulfonic acid and method for preparing the same
    8.
    发明公开
    2,4-pentanedionemonosulfonic acid and method for preparing the same 失效
    2,4-Pentandionmonosulfonsäureund Verfahren zu ihrer Herstellung。

    公开(公告)号:EP0419796A1

    公开(公告)日:1991-04-03

    申请号:EP90114256.2

    申请日:1990-07-25

    CPC classification number: C07C309/07 C07C303/08

    Abstract: 2,4-pentanedionemonosulfonic acid is prepared by reacting chlorosulfonic acid with 2,4-pentanedione, preferably in the presence of an anhydrous solvent. The method of this invention generally yields 2,4-pentanedionemonosulfonic acid in excess of about 75 percent. The novel pentanedionesulfonic acid, 2,4-pentanedionemonosulfonic acid (acetylacetone sulfonic acid) is disclosed.

    Abstract translation: 通过使氯磺酸与2,4-戊二酮反应,优选在无水溶剂的存在下反应来制备2,4-戊二酮一磺酸。 本发明的方法通常产生超过约75%的2,4-戊二酮二磺酸。 公开了新戊二酸磺酸,2,4-戊二酮一磺酸(乙酰丙酮磺酸)。

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