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6 条记录 (耗时 0.011 秒)

    Process for the preparation of 2,6-dihalo-para-trifluoromethylaniline
    2.
    发明授权
    Process for the preparation of 2,6-dihalo-para-trifluoromethylaniline 有权
    2,6-二卤代对 - 三氟甲基苯胺的制备方法

    公开(公告)号：US07553993B2

    公开(公告)日：2009-06-30

    申请号：US10532160

    申请日：2003-10-24

    申请人： Bernard Buathier ,  Pierre Le Roy

    发明人： Bernard Buathier ,  Pierre Le Roy

    IPC分类号： C07C209/74 ,  C07C211/00

    CPC分类号： C07C209/74 ,  C07C211/52

    摘要： Process for the preparation of a compound of general formula (I): in which X represents a halogen atom, by reaction of para-trifluoromethylaniline of formula (II): with a dihalogen X2, the two compounds being introduced simultaneously into a polar aprotic solvent in a dihalogen/compound (II) molar ratio ranging from 1.9 to 2.5 and at a temperature ranging from 100 to 300° C.

    摘要翻译： 制备通式（I）化合物的方法：其中X表示卤素原子，通过式（II）的对三氟甲基苯胺与二卤素X2反应，将两种化合物同时引入极性非质子溶剂 二卤化物（II）摩尔比为1.9-2.5，温度为100-300℃。

    Novel process for the preparation of a synthetic intermediate for pesticides
    4.
    发明申请
    Novel process for the preparation of a synthetic intermediate for pesticides 有权
    制备农药合成中间体的新方法

    公开(公告)号：US20060142614A1

    公开(公告)日：2006-06-29

    申请号：US10532160

    申请日：2003-10-24

    申请人： Bernard Buathier ,  Pierre Le Roy

    发明人： Bernard Buathier ,  Pierre Le Roy

    IPC分类号： C07C211/45

    CPC分类号： C07C209/74 ,  C07C211/52

    摘要： Process for the preparation of a compound of general formula (I): in which X represents a halogen atom, by reaction of para-trifluoromethylaniline of formula (II): with a dihalogen X2, the two compounds being introduced simultaneously into a polar aprotic solvent in a dihalogen/compound (II) molar ratio ranging from 1.9 to 2.5 and at a temperature ranging from 100 to 300° C.

    摘要翻译： 制备通式（I）化合物的方法：其中X表示卤素原子，通过式（II）的对三氟甲基苯胺与二卤代X 2 H 2反应，将两种化合物 同时引入极性非质子溶剂中，二卤化物（II）摩尔比为1.9-2.5，温度为100-300℃。

    Process for the preparation of an alkyl 2-chloropropionate by chlorinating an alkyl lactate
    5.
    发明授权
    Process for the preparation of an alkyl 2-chloropropionate by chlorinating an alkyl lactate 失效
    通过氯化乳酸烷基酯制备2-氯代丙酸烷基酯的方法

    公开(公告)号：US4334083A

    公开(公告)日：1982-06-08

    申请号：US152098

    申请日：1980-05-21

    申请人： Bernard Buathier ,  Andre Bernard

    发明人： Bernard Buathier ,  Andre Bernard

    IPC分类号： C07C67/08 ,  C07B20060101 ,  C07C20060101 ,  C07C67/00 ,  C07C67/287 ,  C07C67/30 ,  C07C67/307 ,  C07C67/317 ,  C07C69/03 ,  C07C69/22 ,  C07C69/24 ,  C07C69/63 ,  C07C69/68 ,  C07C313/00

    CPC分类号： C07C313/04 ,  C07C67/307

    摘要： A racemic or optically active alkyl 2-chloropropionate is prepared, respectively, from a racemic or optically active alkyl lactate by, in a first step, gradually bringing the alkyl lactate into contact with the thionyl chloride, in the presence of an organic base, while maintaining, in the reaction mixture, an excess of thionyl chloride, relative to the amount of alkyl lactate introduced into this mixture, at a temperature below the decomposition point of the chlorosulphinate of the alkyl lactate, which is formed as an intermediate, and then, in a second step, in heating the reaction mixture resulting from the first step at a temperature which is at least equal to the decomposition point of the chlorosulphinate of the alkyl lactate.The alkyl 2-chloropropionates can be used for the manufacture of the racemic or optically active 2-phenoxypropionic acids.

    摘要翻译： 分别由外消旋或光学活性的乳酸烷基酯制备外消旋或光学活性的2-氯丙酸烷基酯，在第一步中，在有机碱的存在下，逐渐使乳酸烷基酯与亚硫酰氯接触，同时 在低于作为中间体形成的乳酸烷基酯的分解点的温度下，相对于引入该混合物的乳酸烷基酯，在反应混合物中保持过量的亚硫酰氯，然后， 在第二步骤中，在至少等于乳酸烷基酯的氯代亚磺酸盐的分解点的温度下加热由第一步产生的反应混合物。 2-氯丙酸烷基酯可用于制备外消旋或光学活性的2-苯氧基丙酸。

    Process for the manufacture of methyl mercaptan
    6.
    发明授权
    Process for the manufacture of methyl mercaptan 失效
    制备甲硫醇的方法

    公开(公告)号：US3935276A

    公开(公告)日：1976-01-27

    申请号：US501293

    申请日：1974-08-28

    申请人： Georges Biola ,  Bernard Buathier ,  Andre Combes ,  Michel Martin

    发明人： Georges Biola ,  Bernard Buathier ,  Andre Combes ,  Michel Martin

    IPC分类号： C07B61/00 ,  B01J21/04 ,  C07C20060101 ,  C07C67/00 ,  C07C313/00 ,  C07C319/08 ,  C07C321/04 ,  C07C148/00

    CPC分类号： C07C321/00

    摘要： Process for the synthesis of methyl mercaptan by the reaction of methanol with hydrogen sulfide wherein a high degree of conversion and enhanced selectivity for the product are obtained by dividing the quantity of catalyst utilized in the reaction into a minimum of three separate portions to form a plurality of reactive catalyst zones and introducing the total amount of hydrogen sulfide reagent into the first of such catalyst zones and thereafter introducing equivalent or alternatively different amounts of the methanol reagent into the consecutive interconnected catalytic zones to react with hydrogen sulfide flowing therethrough while maintaining a molar ratio of hydrogen sulfide to methanol between 1.1 and 2.5. By subdividing the catalyst into separate beds and introducing the reagents consecutively into the catalytic zones, it is possible to maintain the temperature of the reaction mixture within the optimum range and, therefore, to minimize deterioration of the catalyst due to excessive temperature and substantially eliminate the formation of undesired by-products.

    摘要翻译： 通过甲醇与硫化氢的反应合成甲硫醇的方法，其中通过将反应中使用的催化剂的量除以最少三个分开的部分来获得高产率的转化率和提高的选择性，从而形成多个 的反应催化剂区域，并将硫化氢试剂的总量引入到第一个这样的催化剂区域中，然后将相当量或不同量的甲醇试剂引入连续互连的催化区域中，使其与在其中流动的硫化氢反应，同时保持摩尔比 的硫化氢至1.1至2.5之间的甲醇。 通过将催化剂分成单独的床并将试剂连续引入催化剂区域中，可以将反应混合物的温度保持在最佳范围内，从而使由于过度温度引起的催化剂的劣化最小化并基本上消除 形成不希望的副产品。