Process for the preparation of 3-phenoxy-benzaldehydes
    81.
    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

    Abstract: 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.

    Abstract translation: 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
    82.
    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 classification number: C07C323/00

    Abstract: 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.

    Abstract translation: 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。

    Process for the dealkylation of tert.-alkyl substituted phenols
    84.
    发明授权
    Process for the dealkylation of tert.-alkyl substituted phenols 失效
    叔烷基取代酚的脱烷基化方法

    公开(公告)号:US4150243A

    公开(公告)日:1979-04-17

    申请号:US744211

    申请日:1976-11-22

    CPC classification number: C07C37/50

    Abstract: A process for the tertiary dealkylation of a tertiary alkyl containing m- and/or p-cresol wherein a tertiary alkyl containing m- and/or p-cresol is continously introduced into a reaction vessel with a small amount of sulfuric acid or an quivalent amount of a sulfonic acid and the reaction vessel contains a high concentration of m- and/or p-cresol or a high boiling phenol which under the prevailing reaction conditions is not substantially vaporized from the reaction mixture. The reaction mixture is maintained at a temperature of no greater than 230.degree. C. The reaction products are withdrawn continuously from the reactor (and separated into its components) and at the same time a small amount of the reaction mixture being withdrawn intermittently or continously from the reactor.

    Abstract translation: 含有m-和/或对甲酚的叔烷基叔烷基化的方法,其中将含有间 - 和/或对 - 甲酚的叔烷基连续地引入具有少量硫酸或一定量的硫酸的反应容器中 的磺酸,并且反应容器含有高浓度的m-和/或对甲酚或高沸点苯酚,其在主要反应条件下基本上不从反应混合物中汽化。 将反应混合物保持在不高于230℃的温度。将反应产物从反应器中连续取出(并分离成其组分),同时将少量的反应混合物间歇地或连续地从 反应堆。

    Process for purifying alkylphenolz
    85.
    发明授权
    Process for purifying alkylphenolz 失效
    纯化烷基酚的方法

    公开(公告)号:US4113975A

    公开(公告)日:1978-09-12

    申请号:US757422

    申请日:1977-01-06

    CPC classification number: C07C37/72

    Abstract: A process for the removal of acids and potential acid-forming agents from a composition containing such acids and potential acid-forming agents and an alkylphenol which composition is obtained by reacting phenols with alkenes in the presence of sulfuric acid or a sulfonic acid, and for treating the effluent thereby obtained, the process being characterized by the steps of:(a) extracting a major amount of the acid constituents from the alkylphenol mixture by means of water;(b) treating the alkylphenol mixture with a dilute aqueous alkali solution in an amount such that the alkali is insufficient to neutralize all the acid originally present in the alkylphenol mixture,(c) separating the alkylphenol mixture from the aqueous alkali solution;(d) combining the aqueous phases obtained from steps (a) and (b);(e) heating the combined aqueous phases to a temperature of 100.degree. to 200.degree. C,(f) separating off the organic phase obtained in step (e); and(g) discharging the aqueous phase.

Patent Agency Ranking