Process for preparing substituted benzyl compounds and toluene derivatives
    1.
    发明申请
    Process for preparing substituted benzyl compounds and toluene derivatives 审中-公开
    取代苄基化合物和甲苯衍生物的制备方法

    公开(公告)号:US20010020104A1

    公开(公告)日:2001-09-06

    申请号:US09790757

    申请日:2001-02-22

    申请人: Clariant GmbH

    IPC分类号: C07C002/02 C07C006/12

    摘要: The novel two-stage process described here makes it possible to obtain substituted benzyl compounds and toluene derivatives in a simple manner and in high yields by means of Suzuki-type coupling reactions of an aromatic with an organoboron compound, followed by a reduction. The process is particularly useful for preparing ortho-substituted benzyl compounds and toluene derivatives. The process can be applied to both intermolecular and intramolecular coupling reactions. Catalysts used for the coupling reaction are palladium compounds and/or nickel compounds. An advantageous aspect is that only very small amounts of catalyst are required.

    摘要翻译: 这里描述的新颖的两阶段方法可以通过芳香族与有机硼化合物的铃木型偶联反应,然后进行还原,以简单的方式和高收率得到取代的苄基化合物和甲苯衍生物。 该方法对于制备邻位取代的苄基化合物和甲苯衍生物特别有用。 该方法可以应用于分子间和分子内的偶联反应。 用于偶联反应的催化剂是钯化合物和/或镍化合物。 有利的方面是仅需要非常少量的催化剂。

    PROCESS FOR PREPARING 4-SUBSTITUTED 2-ALKYLBIPHENYLS AND 2-ALKOXYLBIPHENYLS
    2.
    发明申请
    PROCESS FOR PREPARING 4-SUBSTITUTED 2-ALKYLBIPHENYLS AND 2-ALKOXYLBIPHENYLS 失效
    制备4-取代的2-烷基苯乙烯和2-烷氧基苯乙烯的方法

    公开(公告)号:US20020115880A1

    公开(公告)日:2002-08-22

    申请号:US10073568

    申请日:2002-02-11

    申请人: Clariant GmbH

    摘要: A process for preparing 4-substituted 2-alkylbiphenyls and 2-alkoxybiphenyls of the formula (I), 1 by reaction of phenylboronic acids of the formula (II) with 4-bromo- or 4-iodo-alkyl- or -alkoxy-anilines or -anilides of the formula (III) to form compounds of the formula (IV), 2 if appropriate subsequent deacylation to form (V) and subsequent diazotization to form compounds of the formula (VI) and reaction with a nucleophile X, a Cu salt by the Sandmeyer reaction or a reducing agent to give 4-substituted 2-alkylbiphenyls and 2-alkoxybiphenyls of the formula (I). 3

    摘要翻译: 通过式(II)的苯基硼酸与4-溴 - 或4-碘 - 烷基 - 或 - 烷氧基 - 苯胺反应制备式(I)的4-取代的2-烷基联苯和2-烷氧基联苯的方法,或 (III)的酰胺化物,以形成式(IV)的化合物,如果适当,随后脱酰作用形成(V)并随后进行重氮化以形成式(VI)化合物,并与亲核试剂X,Cu盐通过 Sandmeyer反应或还原剂,得到式(I)的4-取代的2-烷基联苯和2-烷氧基联苯。