Process for the preparation of arylglyoxylic acids
    2.
    发明授权
    Process for the preparation of arylglyoxylic acids 失效
    芳基乙醛酸的制备方法

    公开(公告)号:US4221719A

    公开(公告)日:1980-09-09

    申请号:US62846

    申请日:1979-08-01

    CPC分类号: C07C51/235 C07C51/255

    摘要: Process for the preparation of an arylglyoxylic acid of the formula Ar--CO--COOH, wherein Ar is optionally substituted aryl, which process comprises oxidizing the corresponding arylethane-1,2-diol of the formula ##STR1## with oxygen or a gas containing molecular oxygen, in an aqueous alkaline medium and in the presence of a platinum-group metal catalyst and, as an activator, a material selected from lead, lead compounds, bismuth and bismuth compounds, at a temperature of up to the boiling point of the reaction mixture; e.g. phenylglyoxylic acid is produced from phenylethane-1,2-glycol preferably using platinum activated with lead, bismuth, or compounds thereof.

    摘要翻译: 制备式Ar-CO-COOH的芳基乙醛酸的方法,其中Ar是任选取代的芳基,该方法包括用式(I)氧化相应的式(I)的芳基乙烷-1,2-二醇与氧或 含有分子氧的气体,在含水碱性介质中,在铂族金属催化剂存在下,作为活化剂,选自铅,铅化合物,铋和铋化合物的材料,在最高沸点 点反应混合物; 例如 优选使用由铅,铋或其化合物活化的铂,由苯乙烷-1,2-二醇制备苯基乙醛酸。

    Process for the preparation of aryloxyacetic acid
    3.
    发明授权
    Process for the preparation of aryloxyacetic acid 失效
    制备芳氧基乙酸的方法

    公开(公告)号:US4238625A

    公开(公告)日:1980-12-09

    申请号:US092783

    申请日:1979-11-08

    CPC分类号: C07C51/255 C07C51/235

    摘要: In a process for the preparation of an aryloxyacetic acid by oxidation of aryloxyethanol of the formula ##STR1## wherein m represents 1 or 2,n represents the numeral which results from the difference (6-m) andR either individually or independently of one another represent hydrogen, alkyl, cycloalkyl, aryl, aralkyl, alkoxy, cycloalkoxy, aryloxy, hydroxyl, halogen, alkylcarbonyl, arylcarbonyl, carboxyl or nitro, or represent a benzene ring or cycloalkane ring fused to the phenyl ring,with oxygen or an oxygen-containing gas in an aqueous alkaline medium at a temperature from 0.degree. C. to the boiling point of the reaction mixture in the presence of platinum metals and/or palladium metals containing catalyst, the improvement which comprises carrying out the oxidation in the additional presence of an activator of lead and/or bismuth and/or a compound thereof and optionally in the additional presence of Cadmium and/or its compounds.

    摘要翻译: 在通过氧化式(I)的芳氧基乙醇制备芳氧基乙酸的方法中,其中m表示1或2,n表示由差异(6-m)和R单独或独立地产生的数字 代表氢,烷基,环烷基,芳基,芳烷基,烷氧基,环烷氧基,芳氧基,羟基,卤素,烷基羰基,芳基羰基,羧基或硝基,或代表与苯环稠合的苯环或环烷烃环, 含氧气体在含水碱性介质中,在铂金属和/或含钯金属的催化剂存在下,在0℃至该反应混合物的沸点的温度下,其改进包括在额外的 铅和/或铋和/或其化合物的活化剂的存在,并且任选地在镉和/或其化合物的另外存在下。

    Process for the preparation of arylglyoxylic acids
    4.
    发明授权
    Process for the preparation of arylglyoxylic acids 失效
    芳基乙醛酸的制备方法

    公开(公告)号:US4218380A

    公开(公告)日:1980-08-19

    申请号:US38154

    申请日:1979-05-11

    CPC分类号: C07C51/373 C07D317/60

    摘要: Novel process for the preparation of an arylglyoxylic acid compound, e.g., phenylglyoxylic acid, which comprises oxidizing an .alpha.-hydroxyarylacetic acid, e.g., mandelic acid, of the formula ##STR1## in which m is 1, 2 or 3,each R individually is hydrogen, alkyl, cycloalkyl,aryl, aralkyl, alkoxy, cycloakoxy, aryloxy, hydroxyl,halogen, aminoalkyl or carboxyl,with the proviso thattwo R's together can represent the methylenedioxygroup or a fused-on, optionally heterocyclic andoptionally substituted ring,with oxygen or a gas containing molecular oxygen in aqueous alkaline medium in the presence of a catalyst comprising a platinum-group metal in the presence as an activator of at least one of lead, a lead compound, bismuth and a bismuth compound at a temperature of up to the boiling point of the resulting reaction mixture.

    摘要翻译: 用于制备芳基乙醛酸化合物(例如苯基乙醛酸)的新方法,其包括将下式(I)的α-羟基芳基乙酸(例如扁桃酸)氧化为其中m为1,2或3,其中m为1,2或3 R单独为氢,烷基,环烷基,芳基,芳烷基,烷氧基,环烷氧基,芳氧基,羟基,卤素,氨基烷基或羧基,条件是两个R一起可以代表亚甲二氧基或稠合,任选杂环和任选取代 在作为铅,铅化合物,铋和铋化合物中的至少一种的活化剂的存在下,在包含铂族金属的催化剂存在下,在含水碱性介质中,用氧气或含有分子氧的气体, 温度达到所得反应混合物的沸点。

    Process for the preparation of N,N-diaryl-ureas
    5.
    发明授权
    Process for the preparation of N,N-diaryl-ureas 失效
    制备N,N-二芳基脲的方法

    公开(公告)号:US4820871A

    公开(公告)日:1989-04-11

    申请号:US105856

    申请日:1987-10-07

    CPC分类号: C07C273/1827

    摘要: N,N-Diaryl-ureas of the formulaR.sup.1 --NR.sup.2 --CO--NH--R.sup.3whereinR.sup.1 and R.sup.2 denote aryl andR.sup.3 denotes alkyl, aralkyl or aryl, can be prepared by a process in which a diarylamine of the formulaR.sup.1 --NH--R.sup.2is reacted with an isocyanate of the formulaR.sup.3 --NCOwherein R.sup.1, R.sup.2 and R.sup.34 have the above meaning, in the presence of acid compounds and in the presence or absence of an inert solvent and/or diluent at elevated temperature.

    摘要翻译: 式R 1 -R 2 -CO-NH-R 3的N,N-二芳基脲其中R 1和R 2表示芳基,R 3表示烷基,芳烷基或芳基,可以通过其中式R 1 -NH -R2与式R3-NCO的异氰酸酯反应,其中R 1,R 2和R 34具有上述含义,在酸性化合物的存在下和在惰性溶剂和/或稀释剂的存在或不存在下,在升高的温度下反应。

    Process for the preparation of 3-phenoxy-benzaldehydes
    8.
    发明授权
    Process for the preparation of 3-phenoxy-benzaldehydes 失效
    3-苯氧基 - 苯甲醛的制备方法

    公开(公告)号:US4366325A

    公开(公告)日:1982-12-28

    申请号:US195157

    申请日:1980-10-08

    摘要: In a process for the preparation of 3-phenoxy-benzaldehyde by oxidation of 3-phenoxy-benzyl alcohol of the formula ##STR1## in which m represents a number from 1 to 4,n represents a number from 1 to 5 andR.sup.1 and R.sup.2 are identical or different and denote hydrogen, halogen, alkyl, cycloalkyl, aralkyl, alkoxy, cycloalkoxy, aryloxy or perfluoroalkyl,with an oxygen containing gas in aqueous alkali at a temperature from the solidification point to the boiling point of the reaction mixture in the presence of a platinum metal catalyst and in the presence of lead and/or bismuth and/or tellurium and/or a compound of said lead, bismuth or tellurium.

    摘要翻译: 在通过氧化式“IMAGE”的3-苯氧基 - 苄醇制备3-苯氧基 - 苯甲醛的方法中,其中m表示1至4的数,n表示1至5的数,R1和R2 在相对于反应混合物的固化点至沸点的温度下,在碱存在下,与含氧气体一起表示氢,卤素,烷基,环烷基,芳烷基,烷氧基,环烷氧基,芳氧基或全氟烷基 的铂金属催化剂,并且在铅和/或铋和/或碲和/或所述铅,铋或碲的化合物存在下进行。

    Process for the preparation of alkylthiomethylphenols and
arylthiomethylphenols
    9.
    发明授权
    Process for the preparation of alkylthiomethylphenols and arylthiomethylphenols 失效
    制备烷硫基甲基苯酚和芳基硫代甲基苯酚的方法

    公开(公告)号:US4358616A

    公开(公告)日:1982-11-09

    申请号:US211987

    申请日:1980-12-01

    CPC分类号: C07C323/00

    摘要: The present invention provides a process for the preparation of an alkylthiomethylphenol or arylthiomethylphenol of the general formula ##STR1## in which m, n, R and R.sup.1 have the meaning mentioned in the specification, in which a hydroxymethylphenol of the general formula ##STR2## is reacted with a mercaptan or thiophenol at a temperature of from 20.degree. to 200.degree. C., if appropriate in the presence of a diluent.

    摘要翻译: 本发明提供了制备通式为“IMAGE”的烷基硫代甲基苯酚或芳基硫代甲基苯酚的方法,其中m,n,R和R 1具有说明书中提及的含义,其中通式“IMAGE”的羟甲基苯酚是 如果合适,在稀释剂存在下,在20℃至200℃的温度下与硫醇或苯硫酚反应。