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    • 2. 发明授权
    • Pure crystalline racemic sodium parahydroxymandelate, process for its
preparation and uses thereof
    • 纯结晶外消旋钠对羟基扁桃酸钠,其制备及其用途
    • US4504678A
    • 1985-03-12
    • US455143
    • 1983-01-03
    • Alain SchouteetenYani Christidis
    • Alain SchouteetenYani Christidis
    • C07C59/52C07C59/50
    • C07C59/52
    • Pure crystalline racemic sodium parahydroxymandelate free from any ions of chloride, acetate, formate and sulfate group, is manufactured by condensing in water, in the presence of sodium hydroxide at a temperature between 30.degree. and 100.degree. C., glyoxylic acid or sodium glyoxylate with an excess of phenol, concentrating it hot, until the start of crystallization of the solution thus obtained after neutralization and removal of the unconverted phenol either by steam distillation, or by extraction with a water-immiscible organic solvent. The resulting suspension obtained is cooled, drained after some hours of standing at a temperature close to 5.degree. C., and the resulting precipitate recovered by washing it with iced water followed by drying to constant weight. The product is useful for the manufacture of crystalline sodium paraformylphenolate.
    • 不含氯离子,乙酸盐,甲酸盐和硫酸盐基团的任何离子的纯结晶外消旋钠对羟基扁桃酸盐,在氢氧化钠存在下,在30〜100℃的温度下,在水中冷凝,乙醛酸或乙醛酸钠与 过量的苯酚,将其浓缩,直到通过蒸汽蒸馏中和除去未转化的酚后,或通过与水不混溶的有机溶剂萃取,所得溶液开始结晶。 将得到的悬浮液冷却,在接近5℃的温度下静置几小时后排干,通过用冰水洗涤所得沉淀物,然后干燥至恒重。 该产品可用于制造结晶多聚甲酚钠。
    • 9. 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。
    • 10. 发明授权
    • Process for manufacturing N-acyl derivatives of hydroxy-arylglycines
    • 制备羟基 - 芳基甘氨酸的N-酰基衍生物的方法
    • US4105690A
    • 1978-08-08
    • US722284
    • 1976-09-10
    • Yani ChristidisAlain Schouteeten
    • Yani ChristidisAlain Schouteeten
    • C07C231/00C07C67/00C07C231/08C07C231/12C07C233/45C07C233/47C07C233/49C07C237/00C07D307/77C07C102/00C07C103/30C07C103/46C07C103/66
    • C07D307/77C07C233/45C07C237/00
    • Condensation of the addition product of glyoxylic acid and amides with hydroxyaryl compounds is effected by a first step, wherein the reaction is carried out hot, at a temperature below 60.degree. C, of an aliphatic amide having at the most 4 carbon atoms selected from the group of acetamide, chloracetamide, propionamide, acrylamide and butyramide, on an aqueous solution of glyoxylic acid. Then in a second step, after the addition of acetic acid and gaseous hydrochloric acid, condensation is effected at a temperature below 35.degree. C of the carboxamidoglycolic acid with an excess reaching 500% of hydroxyaryl compound selected from the group comprising phenol and its alkyl derivatives, their halogen derivatives, polyphenols and their ethers and betanaphthol. After the condensation of said second step, the volatile products are removed by vacuum distillation. When the hydroxyaryl compound is phenol, the crude product resulting from this distillation is taken up in nitromethane or water, which are a non-solvent of the N-acyl derivative of parahydroxyphenylglycine but a solvent of the corresponding ortho derivative; the proportion of the para derivative in the resulting compound is then of the order of 100%.
    • 乙醛酸和酰胺与羟基芳基化合物的加成产物的缩合是通过第一步进行的,其中反应在低于60℃的温度下进行,所述脂族酰胺选自最多4个碳原子, 乙酰胺,氯乙酰胺,丙酰胺,丙烯酰胺和丁酰胺的组合在乙醛酸水溶液中。 然后在第二步中,在加入乙酸和气态盐酸后,在羧酰胺聚糖酸的低于35℃的温度下进行冷凝,过量的达到500%的选自苯酚及其烷基衍生物的羟基芳基化合物 ,它们的卤素衍生物,多酚及其醚和β-萘酚。 在所述第二步骤冷凝后,通过真空蒸馏除去挥发性产物。 当羟基芳基化合物是苯酚时,由该蒸馏产生的粗产物溶于硝基甲烷或水中,硝基甲烷或水是对羟基苯基甘氨酸的N-酰基衍生物的非溶剂,但是相应的邻位衍生物的溶剂; 所得化合物中对位衍生物的比例为约100%。