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    • 33. 发明授权
    • Process for manufacturing thienyl-2 acetic acid
    • 制备噻吩-2-乙酸的方法
    • US4196299A
    • 1980-04-01
    • US892435
    • 1978-03-31
    • Jean Claude VallejosYani Christidis
    • Jean Claude VallejosYani Christidis
    • C07D333/22C07D333/24
    • C07D333/24C07D333/22
    • The process for manufacturing thienyl-2 acetic acid from acetylthiophene comprises condensing acetylthiophene at a temperature below 120.degree. C. with an excess of a C.sub.4 to C.sub.8 aliphatic primary amine or with a cyclic amine, in the presence of an acid catalyst and removing the water formed, so as to obtain the corresponding imine. The imine is reacted with excess sulfur at a temperature equal to or below 100.degree. C. in a basic and aprotic solvent to produce the corresponding thioamide. The thioamide is hydrolyzed by the action of an excess of a strongly alkaline base in a C.sub.4 to C.sub.8 alcohol or in ethylene glycol, if necessary in the presence of water, so as to obtain an alkali salt of thiophene-2 acetic acid. Finally the latter is treated with a strong acid in aqueous solution to liberate the thienyl-2 acetic acid.
    • 从乙酰噻吩制备噻吩-2-乙酸的方法包括在低于120℃的温度下用过量的C 4至C 8脂族伯胺或与环状胺在酸催化剂存在下将乙酰噻吩缩合并除去水 形成,以获得相应的亚胺。 亚胺在碱性和非质子溶剂中在等于或低于100℃的温度下与过量的硫反应生成相应的硫代酰胺。 如果需要,在水存在下,硫代酰胺通过过量的强碱性碱在C4至C8醇或乙二醇中的作用水解,得到噻吩-2-乙酸的碱金属盐。 最后,后者用强酸在水溶液中处理以释放噻吩基-2-乙酸。
    • 36. 发明授权
    • Transvinylation of carboxylic acids
    • 羧酸的转化
    • US5223621A
    • 1993-06-29
    • US817194
    • 1992-01-06
    • Jean-Claude VallejosYani Christidis
    • Jean-Claude VallejosYani Christidis
    • C07C67/10
    • C07C67/10
    • Transvinylation process between vinyl acetate or vinyl propionate and a carboxylic acid of general formula (I),RCOOH (I)in which R represents a substituted or non-substituted alkyl, cycloalkyl, aralkyl or aromatic radical, in the presence of a palladium catalyst, in which the catalyst is obtained in situ, by reacting, in the reaction medium, a derivative of palladium chosen from the group constituted by palladium II acetate, nitrate or hydroxide and palladium deposited on charcoal, with a tertiary amine chosen from the group constituted by 2,2'-bipyridyl, orthophenanthroline or tetramethylethylenediamine, that the quantity of palladium used, expressed in gram-atom of palladium II per 100 moles of carboxylic acid of general formula (I) is between 0.005 and 1 and that the quantity of amine is greater than 1 and less than 10 moles per gram-atom of palladium II used and use for the preparation of certain products.
    • 乙酸乙烯酯或丙酸乙烯酯与通式(I)的羧酸,其中R表示取代或未取代的烷基,环烷基,芳烷基或芳族基团的RCOOH(I)在钯催化剂存在下的反应, 其中通过在反应介质中使选自由钯II乙酸酯,硝酸盐或氢氧化物构成的组的钯衍生物和沉积在活性炭上的钯与选自以下组成的组中的叔胺反应获得催化剂: 2,2'-联吡啶基,邻菲咯啉或四甲基乙二胺,使用的钯的量(以每100摩尔通式(I)的羧酸计)钯II的克原子数为0.005〜1,胺的量为 大于1且小于10摩尔/克原子的钯II,并用于制备某些产品。
    • 40. 发明授权
    • Process for preparing aromatic nitriles
    • 制备芳香腈的方法
    • US4385006A
    • 1983-05-24
    • US367125
    • 1982-04-09
    • Alain SchouteetenYani Christidis
    • Alain SchouteetenYani Christidis
    • C07C255/49C07C255/53C07C120/08
    • C07C253/22
    • The invention relates to obtaining aromatic nitriles of general formula: (R).sub.n --C.sub.6 H.sub.4 --CN, where n=1, 2 or 3, and the rest R, identical or different represent an atom of hydrogen, chlorine or bromine or an alkyl, aryl, alkoxy, alkylamino, hydroxy or amino group, by a process comprising decarboxylating ammoxidation reaction, in an alkaline aqueous medium, at a pH higher than, or equal to, 13, in the presence of a catalyst based on one or several transition metals and an alkaline hydroxide, applied to an arylglyoxylic acid free or salified, of the formula: (R).sub.n --C.sub.6 H.sub.4 --CO--COOH (where n and R have the above-mentioned meanings), or to one of its functional derivatives of the lactone, lactame or C.sub.1 -C.sub.3 -alkyl ester type.
    • 本发明涉及获得通式为(R)n-C6H4-CN的芳族腈,其中n = 1,2或3,其余的R,相同或不同,表示氢原子,氯原子或溴原子或烷基, 芳基,烷氧基,烷基氨基,羟基或氨基,在碱性水性介质中,在基于一种或多种过渡金属的催化剂的存在下,在高于或等于13的pH下进行脱羧氨基化反应 和(R)n-C 6 H 4 -CO-COOH(其中n和R具有上述含义),或其功能衍生物之一的式(R)n-C6H4-CO-COOH(其中n和R具有上述含义),不溶或盐化的芳基乙醛酸的碱性氢氧化物 内酯,内酯或C1-C3-烷基酯类。