Process for the preparation of propargyl ammonium-chloride
    1.
    发明授权
    Process for the preparation of propargyl ammonium-chloride 失效
    炔丙基氯化铵的制备方法

    公开(公告)号:US5449828A

    公开(公告)日:1995-09-12

    申请号:US353816

    申请日:1994-12-09

    摘要: The present invention relates to a process for the preparation of L-isomer of propargyl-ammonium-chloride derivatives of the formula (I) ##STR1## by decomposing D-tartarte of L-isomer of the amine of the general ##STR2## wherein y is hydrogen or fluoro and by reacting the obtained L-issomer amine of the formula (II) in the presence of a base with a halide of the formula (V), X--CH.sub.2 --C.ident.CCH wherein X is halogen and by reacting the so obtained L-isomer of the Formula (III) ##STR3## with hydrogen-chloride in an organic solvent, wherein x is a halogen atom,y is a hydrogen or fluorine atom.

    摘要翻译: 本发明涉及通过将通用化合物(I)的胺的L-异构体的D-异构体分解而制备式(I)的炔丙基氯化铵衍生物的L-异构体的方法 (II)其中y是氢或氟,并且通过使式(II)所得的L-取代的胺在碱的存在下与式(V)的卤化物反应,X-CH 2 -C = CCH,其中X 是通过使所得到的式(III)的III型异构体在有机溶剂中与氯化氢反应,其中x是卤素原子,y是氢或氟原子。

    Process for the preparation of benzimidazole-thiol
    3.
    发明授权
    Process for the preparation of benzimidazole-thiol 失效
    苯并咪唑硫醇的制备方法

    公开(公告)号:US4675413A

    公开(公告)日:1987-06-23

    申请号:US811246

    申请日:1985-12-19

    IPC分类号: C07D235/32 C07D235/04

    CPC分类号: C07D235/32

    摘要: A new process is disclosed for preparing a compound of the formula (I) ##STR1## wherein R is C.sub.1 to C.sub.5 alkyl; which comprises reducing a compound of the formula (II) ##STR2## or salt thereof wherein A is --SO.sub.2 X, --SOH, --SOA.sup.1, or --SA.sup.1 group,X is chlorine or hydrogen; andA.sup.1 is a group of the Formula ##STR3## with the aid of aluminum activated with a catalytic amount of a metal and/or metal salt in a mixture of water, a mineral acid, and an aliphatic carboxylic acid having 1 to 3 carbon atoms at a temperature of 0.degree. to 100.degree. C., thereafter, optionally, the product is recovered from an acid medium at a pH range of 2 to 3 in crystalline form.

    摘要翻译: 公开了用于制备式(I)化合物的新方法,其中R是C1至C5烷基; 其包括还原式(II)的化合物或其盐,其中A是-SO 2 X,-SOH,-SOA 1或-SA 1基团,X是氯或氢; 并且A1是通过在水,无机酸和具有1至3个碳原子的脂族羧酸的混合物中催化量的金属和/或金属盐活化的铝的助催化剂的组合的“IMAGE” 在0℃至100℃的温度下,然后,任选地,该产物从酸性介质中以2至3的结晶形式从pH值范围内回收。