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51 条记录 (耗时 0.026 秒)

    Method for grafting a substituted difluoromethyl group
    1.
    发明授权
    Method for grafting a substituted difluoromethyl group 失效
    接枝取代二氟甲基的方法

    公开(公告)号：US06203670B1

    公开(公告)日：2001-03-20

    申请号：US09230761

    申请日：1999-04-06

    申请人： Gérard Forat ,  Jean-Manuel Mas ,  Laurent Saint-Jalmes

    发明人： Gérard Forat ,  Jean-Manuel Mas ,  Laurent Saint-Jalmes

    IPC分类号： C07F100

    CPC分类号： C07C319/14 ,  B01J19/126 ,  C07B45/00 ,  C07B45/06 ,  C07C303/02 ,  C07C313/04 ,  C07C323/03 ,  C07C309/80

    摘要： Provided is a process for grafting a substituted difluoromethyl group onto a compound bearing at least one electrophilic substituent, comprising (i) contacting the compound bearing at least one electrophilic substituent with a nucleophilic reagent which comprises (a) a fluorocarboxylic acid having the formula Ea—CF2—COOH, wherein Ea is an electron-withdrawing atom or group, the fluorocarboxylic acid being at least partially salified with an organic or inorganic cation and (b) a polar aprotic solvent, and (ii) exposing the resulting medium of reaction to the action of microwave energy.

    摘要翻译： 提供了将取代的二氟甲基接枝到带有至少一个亲电子取代基的化合物上的方法，其包括（i）使带有至少一个亲电子取代基的化合物与亲核试剂接触，所述亲核试剂包含（a）具有式Ea- CF 2 -COOH，其中Ea是吸电子原子或基团，所述氟代羧酸用有机或无机阳离子至少部分成盐，和（b）极性非质子溶剂，和（ii）将所得反应介质暴露于 微波能量的作用。

    Reagent and process for the synthesis of oxysulphide-containing fluorine-containing organic derivatives
    4.
    发明授权
    Reagent and process for the synthesis of oxysulphide-containing fluorine-containing organic derivatives 失效
    用于合成含氧硫化物的含氟有机衍生物的试剂和方法

    公开(公告)号：US5859288A

    公开(公告)日：1999-01-12

    申请号：US620359

    申请日：1996-03-22

    申请人： Gerard Forat ,  Jean-Manuel Mas ,  Laurent Saint-Jalmes

    发明人： Gerard Forat ,  Jean-Manuel Mas ,  Laurent Saint-Jalmes

    IPC分类号： C07B45/04 ,  C07C303/02 ,  C07C303/14 ,  C07C309/06 ,  C07C309/39 ,  C07C309/80 ,  C07C313/02 ,  C07C313/04

    CPC分类号： C07C303/02 ,  C07C313/04

    摘要： The invention relates to a reagent which is useful for the synthesis of oxysulphide-containing fluorine-containing organic derivatives by reacting with an oxide of sulphur, especially sulphur dioxide, characterized in that it comprises:a) a fluorocarboxylic acid of formula E.sub.w --CF.sub.2 --COOH where E.sub.w is an electron-withdrawing group or atom which is at least partially salified by an organic or inorganic cation, andb) an aprotic polar solvent; andin that the content of releasable protons carried by its various components, including their impurities, is at most equal to half the initial molar concentration of the said fluorocarboxylic acid.This reagent can be used by heating in order to form fluorine-containing sulphinic or sulphonic acids.

    摘要翻译： 本发明涉及一种用于通过与硫的氧化物，特别是二氧化硫反应来合成含氧硫化物的含氟有机衍生物的试剂，其特征在于它包括：a）式Ew-CF2-的氟代羧酸， COOH，其中Ew是吸电子基团或至少部分由有机或无机阳离子盐化的原子，和b）非质子极性溶剂; 并且由其各种组分（包括它们的杂质）携带的可释放质子的含量最多等于所述氟代羧酸的初始摩尔浓度的一半。 该试剂可以通过加热使用，以形成含氟亚磺酸或磺酸。

    Catalysts for reaction between an isocyanate and an alcohol
    7.
    发明授权
    Catalysts for reaction between an isocyanate and an alcohol 有权
    异氰酸酯与醇反应的催化剂

    公开(公告)号：US08816036B2

    公开(公告)日：2014-08-26

    申请号：US13123972

    申请日：2009-10-12

    申请人： Christian Maliverney ,  Laurent Saint-Jalmes

    发明人： Christian Maliverney ,  Laurent Saint-Jalmes

    IPC分类号： C08G18/22 ,  C08G18/42 ,  C07C269/02 ,  C08J9/04 ,  C08J9/08

    CPC分类号： C08G18/48 ,  B01J31/1805 ,  B01J31/2234 ,  B01J2231/34 ,  B01J2531/26 ,  C08G18/10 ,  C08G18/222 ,  C08G18/2825

    摘要： Catalysts, which are free of tin, are described which are useful in the reaction between an isocyanate and an alcohol, which is a key step for preparing polyurethane polymers. The catalyst is a metal complex or salt of formula (1): [Zn(L1)l1(L2)l2(Y)x]  (1) in which: l1≧1 and l2=0 or 1; with l1+l2=2, x=1 or 2, the symbol L1 represents a ligand which is a β-dicarbonylato anion or the enolate anion of a β-dicarbonyl compound or an acetylacetato anion derived from a β-ketoester, when l1=2, the symbols L1 are identical or different, the symbol L2 represents an anionic ligand which is different from L1, and the symbol Y represents a neutral ligand; where the metal complex or salt C of formula (1) is not zinc diacetylacetonate.

    摘要翻译： 描述了不含锡的催化剂，其可用于异氰酸酯和醇之间的反应，这是制备聚氨酯聚合物的关键步骤。 催化剂是式（1）的金属络合物或盐：[Zn（L1）11（L2）12（Y）x]（1）其中：l1≥1和l2 = 0或1; 其中l1 + l2 = 2，x = 1或2，符号L1表示一种配体，它是一种“二羰基”阴离子，或者是衍生自α-酮基的二羰基化合物或乙酰乙酰阴离子的烯醇化物阴离子， 当l1 = 2时，符号L1相同或不同，符号L2表示与L1不同的阴离子配体，符号Y表示中性配体; 其中式（1）的金属络合物或盐C不是二乙酰丙酮酸锌。