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    • 6. 发明授权
    • Process for the preparation of aminoaryl .beta.-sulfatoethyl sulfone
compounds
    • 制备氨基芳基β-磺基乙基砜化合物的方法
    • US5463100A
    • 1995-10-31
    • US301311
    • 1994-09-06
    • Walter Rupp
    • Walter Rupp
    • C07C315/04C07C317/18C07C305/18
    • C07C315/04
    • Aminoaryl .beta.-sulfatoethyl sulfone compounds, such as, for example 4-(.beta.-sulfatoethylsulfonyl)-aniline, can be prepared in a quick and easy manner from their corresponding .beta.-hydroxyethyl sulfone compounds by sulfation by spraying a solution or suspension or paste of this aminoaryl .beta.-hydroxyethyl sulfone compound or the acylamino compound thereof in sulfuric acid or aqueous sulfuric acid into a hot inert gas stream of a convection dryer. In this procedure, the drying, esterification reaction and the hydrolysis of any acylamino group present takes place synchronously. The sulfato compound is preferably obtained in the form of granules.
    • 氨基芳基β-磺酰基乙基砜化合物,例如4-(β-磺基乙酰基磺酰基) - 苯胺,可以通过硫酸化以快速和容易的方式从相应的β-羟基乙基砜化合物制备,通过喷洒溶液或悬浮液或糊剂 该氨基芳基β-羟乙基砜化合物或其在硫酸或硫酸水溶液中的酰氨基化合物转化成对流干燥器的热惰性气流。 在该方法中,存在的任何酰氨基的干燥,酯化反应和水解同步进行。 硫酸酯化合物优选以颗粒形式获得。
    • 10. 发明授权
    • Process for the simultaneous preparation of
2,5-dioxo-1,2-oxa-phospholanes and .beta.-halogenpropionic acid halide
    • 同时制备2,5-二氧代-1,2-氧杂磷杂环己烷和{62-卤代丙酸卤化物的方法
    • US4096182A
    • 1978-06-20
    • US778052
    • 1977-03-16
    • Walter RuppManfred Finke
    • Walter RuppManfred Finke
    • C07C53/50C07C51/00C07C67/00C07F9/30C07F9/32C07F9/6571C07F9/6574C07C51/58C07F9/02
    • C07F9/657172C07F9/3211
    • 2,5-Dioxo-1,2-oxa-phospholanes of the formula (I) ##STR1## wherein R.sup.1 is an organic radical and R.sup.2 and R.sup.3 each also represents an organic radical or hydrogen, are prepared by reacting 2-haloformylethyl-phosphinic acid halides of the formula (II) ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 are defined as in formula (I) and X means Cl or Br, preferably Cl, with an approximatey equimolar quantity of acrylic acid. The compounds (II) may also be produced in the reaction batch and in situ by reacting about equimolar quantities of a dihalophosphine of the formula (III) ##STR3## with an .alpha.,.beta.-unsaturated acid (IV)R.sup.4 -- OH (IV)In the formulae (III) and (IV) R.sup.1, R.sup.2, R.sup.3 and X are defined as indicated above.In the reaction there is formed, in addition to the compounds (I), practically exclusively .beta.-halopropionic acid and no free hydrogen halide.The phospholanes (I) are valuable flame retarding agents for plastics, intermediates, for example, for the synthesis of biocidals etc.
    • 式(I)的2,5-二氧代-1,2-氧杂 - 磷酸酯其中R1是有机基团,R2和R3各自也表示有机基团或氢,通过2- 式(II)的卤代甲基乙基 - 次膦酸卤化物其中R 1,R 2和R 3如式(I)中所定义,X表示Cl或Br,优选Cl,具有近似等摩尔量的丙烯酸。 化合物(II)也可以在反应批中生产,并通过使约等摩尔量的式(III)的二卤代膦与(α)β-不饱和酸(IV)R 4 -OH反应 (IV)式(III)和(IV)中,R 1,R 2,R 3和X如上所述定义。