Preparation of 4,6-diaminoresorcinol through a bisazoarylresorcinol
intermediate
    5.
    发明授权
    Preparation of 4,6-diaminoresorcinol through a bisazoarylresorcinol intermediate 失效
    通过双偶氮芳基间苯二酚中间体制备4,6-二氨基间苯二酚

    公开(公告)号:US5453542A

    公开(公告)日:1995-09-26

    申请号:US201297

    申请日:1994-02-24

    CPC分类号: C09B41/001 C07C245/08

    摘要: The present invention is a method of preparing a 4,6-bisarylazoresorcinol comprising reacting an aryldiazonium salt and resorcinol in the presence of a base and a reaction medium containing water and a water-miscible solvent at a temperature in the range of about -5.degree. C to about -60.degree. C. The present invention is also a method of preparing a 2-substituted 4,6-bisarylazoresorcinol comprising reacting an aryldiazonium salt with a 2-substituted resorcinol. The 4,6-bisarylazoresorcinol or 2-substituted 4,6-bisarylazoresorcinol can then be hydrogenated to a 4,6-diaminoresorcinol, which is a precursor to polybisbenzoxazoles (PBOs), polymers which are useful as insulators, solar arrays, and tear-resistant gloves.

    摘要翻译: 本发明是一种制备4,6-二芳基氮杂环戊二烯的方法,包括在碱和含有水和水混溶性溶剂的反应介质存在下,在约-5℃的温度下使芳基重氮盐和间苯二酚反应 本发明也是制备2-取代的4,6-二芳基氮杂环戊醇的方法,包括使芳基重氮盐与2-取代的间苯二酚反应。 然后可以将4,6-二芳基氮杂环戊二烯或2-取代的4,6-二芳基氮杂环戊二烯氢化成4,6-二氨基间苯二酚,其是聚双苯并恶唑(PBO)的前体,可用作绝缘体,太阳能阵列和撕裂 - 防护手套

    Cyanoisoalkylation of hydroxy substituted aryl compounds using ketones
    8.
    发明授权
    Cyanoisoalkylation of hydroxy substituted aryl compounds using ketones 失效
    使用酮的羟基取代的芳基化合物的氰基异烷基化

    公开(公告)号:US4916251A

    公开(公告)日:1990-04-10

    申请号:US223

    申请日:1987-01-02

    申请人: Ted A. Morgan

    发明人: Ted A. Morgan

    IPC分类号: C07C255/36

    CPC分类号: C07C255/36

    摘要: A method for cyanoisoalkylating phenols or other hydroxy-substituted aryl compounds, which may have up to two substitutents ortho or para to the hydroxy moiety, comprising reacting a molar excess of phenol or aryl compound with a ketone in the presence of cyanide ion and hydroxide ion at an elevated temperature.Compounds, such as 4-(1-cyano-1-methylethyl)phenol, produced via this method are useful as chemical intermediates in the preparation of polyurethanes, epoxy resins and pharmaceutical and agricultural products.

    摘要翻译: 氰基异烷基化酚或其它羟基取代的芳基化合物的方法,其可以具有至多两个羟基部分的邻位或对位的取代基,包括在氰化物离子和氢氧根离子存在下使摩尔过量的苯酚或芳基化合物与酮反应 在高温下。 通过该方法制备的4-(1-氰基-1-甲基乙基)苯酚等化合物可用作制备聚氨酯,环氧树脂和药用和农产品的化学中间体。