Preparation of ortho-alkylated phenols
    32.
    发明授权
    Preparation of ortho-alkylated phenols 失效
    正烷基化酚的制备

    公开(公告)号:US4538008A

    公开(公告)日:1985-08-27

    申请号:US602302

    申请日:1984-04-20

    CPC分类号: C07C37/055

    摘要: Secondary or tertiary alkyl phenyl ethers may be induced to undergo thermal rearrangement on alumina, aluminum phosphate, or a silica-modified alumina as catalyst to afford the isomeric ortho-alkylphenol. Such rearrangement generally occurs under milder conditions than does the alkylation of a phenol with an olefin using the same alumina as an alkylating catalyst with high regioselectivity and good control over the extent of alkylation.

    摘要翻译: 可以诱导二级或叔烷基苯基醚在氧化铝,磷酸铝或二氧化硅改性的氧化铝上进行热重排作为催化剂,得到异构原烷基苯酚。 这种重排通常在比使用与具有高区域选择性的烷基化催化剂相同的氧化铝与烯烃的烷基化的温和条件下进行,并且对烷基化程度的控制良好。

    Preparation of ortho-alkylated phenols
    33.
    发明授权
    Preparation of ortho-alkylated phenols 失效
    正烷基化酚的制备

    公开(公告)号:US4447657A

    公开(公告)日:1984-05-08

    申请号:US440676

    申请日:1982-11-10

    摘要: Alkyl phenyl ethers may be induced to undergo thermal rearrangement on an alumina catalyst to afford the isomeric ortho-alkylphenol. Such rearrangement generally occurs under milder conditions than does the alkylation of a phenol with an olefin using the same alumina as an alkylating catalyst. Yields frequently are high with good selectivity.

    摘要翻译: 可以诱导烷基苯基醚在氧化铝催化剂上进行热重排,得到异构原烷基酚。 这种重排通常在比使用与烷基化催化剂相同的氧化铝的烯烃与烯烃的烷基化的温和条件下进行。 产率高,选择性好。