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    PROCESS FOR THE SYNTHESIS OF CYCLIC CARBAMATES
    4.
    发明公开
    PROCESS FOR THE SYNTHESIS OF CYCLIC CARBAMATES 有权
    用于生产环状氨基甲酸酯

    公开(公告)号：EP2627642A1

    公开(公告)日：2013-08-21

    申请号：EP11772887.3

    申请日：2011-10-14

    申请人： Lonza Ltd

    发明人： BRENNER, Meinrad ,  CARREIRA, Erick, M. ,  CHINKOV, Nicka ,  LORENZI, Miriam ,  WARM, Aleksander ,  ZIMMERMANN, Lothar

    IPC分类号： C07D265/18

    CPC分类号： C07D265/18

    摘要： The invention is directed to a process for the preparation of a cyclic carbamate starting with o- aminobenzyl alcohol and/or a suitable salt thereof, which is reacted with a cyclisation agent selected from phosgene, diphosgene, triphosgene and mixtures thereof, and in that the reaction is carried out in the presence of an aqueous base, and a water-immiscible organic solvent, said organic solvent mainly comprising at least one compound selected from C 2-5 -alkyl C 2-5 -carboxylates and mixtures of at least one C 2-5 -alkyl C 2-5 -carboxylate with at least one C 5-8 -alkane.

    Process for the synthesis of cyclic carbamates
    8.
    发明公开
    Process for the synthesis of cyclic carbamates 审中-公开
    Verfahren zur Synthese von zyklischen Carbamaten

    公开(公告)号：EP2441759A1

    公开(公告)日：2012-04-18

    申请号：EP10013632.4

    申请日：2010-10-14

    申请人： Lonza Ltd

    发明人： The designation of the inventor has not yet been filed

    IPC分类号： C07D265/18

    CPC分类号： C07D265/18

    摘要： The invention is directed to a process for the preparation of a cyclic carbamate starting with o- aminobenzyl alcohol and/or a suitable salt thereof, which is reacted with a cyclisation agent selected from phosgene, diphosgene, triphosgene and mixtures thereof, and in that the reaction is carried out in the presence of an aqueous base, and a water-immiscible organic solvent, said organic solvent mainly comprising at least one compound selected from C 2-5 -alkyl C 2-5 -carboxylates and mixtures of at least one C 2-5 -alkyl C 2-5 -carboxylate with at least one C 5-8 -alkane.

    摘要翻译： 本发明涉及一种由邻氨基苄醇和/或其合适的盐开始制备环状氨基甲酸酯的方法，其与选自光气，双极光，三光气及其混合物的环化剂反应， 反应在碱水溶液和与水不混溶的有机溶剂的存在下进行，所述有机溶剂主要包含至少一种选自C 2-5 - C 2-5 - 烷基C 2-5 - 羧酸盐的化合物和至少一种C 具有至少一个C 5-8烷基的2-5-烷基C 2-5 - 羧酸烷基酯。