Preparation of 4-methyl-5-chloromethyl-imidazole
    11.
    发明授权
    Preparation of 4-methyl-5-chloromethyl-imidazole 失效
    4-甲基-5-氯甲基咪唑的制备

    公开(公告)号:US4211875A

    公开(公告)日:1980-07-08

    申请号:US974248

    申请日:1978-12-29

    申请人: Klaus Halbritter

    发明人: Klaus Halbritter

    IPC分类号: C07D233/54 C07D233/64

    CPC分类号: C07D233/64

    摘要: 4-Methyl-5-chloromethyl-imidazole is prepared in the form of its hydrochloride by direct chloromethylation of 4-methyl-imidazole, thus becoming readily available industrially as an intermediate.

    摘要翻译: 4-甲基-5-氯甲基咪唑以其盐酸盐的形式通过4-甲基咪唑的直接氯甲基化制备,因此在工业上容易获得中间体。

    Preparation of indanes
    17.
    发明授权
    Preparation of indanes 失效
    制备茚满

    公开(公告)号:US4740646A

    公开(公告)日:1988-04-26

    申请号:US76592

    申请日:1987-07-23

    IPC分类号: C07C2/86

    摘要: Indanes are prepared by reacting substituted or unsubstituted benzyl halides with olefins in the presence of a Lewis acid as catalyst by reacting benzyl halides I ##STR1## (where R.sup.1 and R.sup.2 =hydrogen, alkyl, alkoxy, cycloalkyl, aryl, aryloxy, aralkylR.sup.3 =R.sup.1, halogen or an ortho-fused ring systemX=halogen)with olefins II ##STR2## (where R.sup.4 to R.sup.7 =hydrogen or alkyl unbranched at alpha) in the presence of catalytic amounts of titanium tetrachloride.

    摘要翻译: 通过使苄基卤化物I I(其中R 1和R 2 =氢,烷基,烷氧基,环烷基,芳基,芳氧基,芳烷基R 3)的路易斯酸作为催化剂存在下,使取代或未取代的苄基卤与烯烃反应制备 = R1,卤素或邻位稠合的环体系X =卤素)与烯烃II(其中R 4至R 7 =氢或在α下未分支的烷基)在催化量的四氯化钛存在下反应。