Process for the preparation of omega-arylalkanoic acids
    5.
    发明授权
    Process for the preparation of omega-arylalkanoic acids 失效
    制备ω-芳基链烷酸的方法

    公开(公告)号:US5149866A

    公开(公告)日:1992-09-22

    申请号:US746276

    申请日:1991-08-14

    IPC分类号: C07C51/02 C07C59/52 C07C59/64

    CPC分类号: C07C59/64 C07C51/02 C07C59/52

    摘要: The present inventon pertains to a process for the preparation of omega-arylalkanoic acids of the genral formulaR--Ar--R.sup.1 --COOHwherein R is hydrogen, hydroxy, C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.8 alkoxy, or aryl; wherein R.sup.1 is C.sub.1 -C.sub.4 alkyl; and wherein Ar is an aryl group which can be further substituted with at least one of hydroxy, C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.8 alkoxy, aryl, halide, amino, or acetamido. The omega arylalkanoic acids of the given formula are prepared using catalysts which provide an improvement over the known Willgerodt-Kindler reaction.The present invention also pertains to methods for removing sulfur during the above-described process for the preparation of the omega-arylalkanoic acids.

    摘要翻译: 本发明涉及制备式R-Ar-R 1 -COOH的ω-芳基链烷酸的方法,其中R是氢,羟基,C 1 -C 8烷基,C 1 -C 8烷氧基或芳基; 其中R1是C1-C4烷基; 并且其中Ar是可以被羟基,C 1 -C 8烷基,C 1 -C 8烷氧基,芳基,卤素,氨基或乙酰氨基中的至少一种进一步取代的芳基。 使用提供对已知Willgerodt-Kindler反应的改进的催化剂制备给定式的ω-芳基链烷酸。 本发明还涉及在上述制备ω-芳基链烷酸的方法中除去硫的方法。