Process for the preparation of carbamates
    1.
    发明授权
    Process for the preparation of carbamates 有权
    制备氨基甲酸酯的方法

    公开(公告)号:US07405319B2

    公开(公告)日:2008-07-29

    申请号:US11437859

    申请日:2006-05-22

    IPC分类号: C07C269/00 C07C259/00

    摘要: The present invention provides an improved process for the preparation of carbamates with high selectivity of pharmaceutical interest by an eco-friendly, non-toxic, phosgene-/isocyanate-/CO-free clean route through a reaction of amine, organic halide compound and carbon dioxide in the presence of a solid, reusable catalyst at moderate conditions and does not require additional cocatalyst/promoter as well as solvent.

    摘要翻译: 本发明提供了一种通过环境友好,无毒,光气/异氰酸酯/无CO的清洁途径通过胺,有机卤化物和碳的反应制备药物感兴趣的高选择性的氨基甲酸酯的改进方法 在中等条件下在固体,可重复使用的催化剂存在下进行二氧化,并且不需要额外的助催化剂/促进剂以及溶剂。

    Process for preparing cyclic carbonates
    2.
    发明申请
    Process for preparing cyclic carbonates 审中-公开
    制备环状碳酸酯的方法

    公开(公告)号:US20060094893A1

    公开(公告)日:2006-05-04

    申请号:US10976706

    申请日:2004-10-29

    IPC分类号: C07C67/36

    摘要: The present invention relates to a process for the preparation of cyclic carbonates comprising contacting an epoxide with CO2 in the presence of a titanosilicate catalyst and a base co-catalyst at a temperature above 313 K and a pressure above 2 bar for a period of 0.5 to 8 hrs and isolating the formed cyclic carbonate from the reaction mixture by conventional methods.

    摘要翻译: 本发明涉及一种制备环状碳酸酯的方法,包括在高于313K的温度下在钛硅酸盐催化剂和碱助催化剂存在下使环氧化物与CO 2 2接触,并且压力高于 2巴,时间为0.5至8小时,并通过常规方法从反应混合物中分离形成的环状碳酸酯。

    Process for the preparation of dialkyl carbonate
    3.
    发明授权
    Process for the preparation of dialkyl carbonate 有权
    制备碳酸二烷基酯的方法

    公开(公告)号:US07518012B2

    公开(公告)日:2009-04-14

    申请号:US11394136

    申请日:2006-03-30

    IPC分类号: C07C69/96

    摘要: The present invention provides a process for the preparation of dialkyl carbonates of general formula (1) wherein R=alkyl (C1-C8) or C6H5CH2 the said process comprises a reaction in between cyclic carbonate and alcohol, in the presence of a solid, double metal cyanide complex catalyst, at a temperature in the range of 140-180° C., for a period of 4-10 hrs, followed by the separation of catalyst from the above said reaction mixture by known methods to obtain the desired product.

    摘要翻译: 本发明提供了制备通式(1)的碳酸二烷基酯的方法,其中R =烷基(C 1 -C 8)或C 6 H 5 CH 2,所述方法包括环状碳酸酯和醇之间的反应,在固体,双 金属氰化物络合物催化剂,温度范围为140-180℃,时间为4-10小时,然后用已知方法从上述反应混合物中分离催化剂,得到所需产物。

    Process for the preparation of dialkyl carbonate
    8.
    发明申请
    Process for the preparation of dialkyl carbonate 有权
    制备碳酸二烷基酯的方法

    公开(公告)号:US20070083062A1

    公开(公告)日:2007-04-12

    申请号:US11394136

    申请日:2006-03-30

    IPC分类号: C07C51/255

    摘要: The present invention provides a process for the preparation of dialkyl carbonates of general formula (1) wherein R=alkyl (C1-C8) or C6H5CH2 the said process comprises a reaction in between cyclic carbonate and alcohol, in the presence of a solid, double metal cyanide complex catalyst, at a temperature in the range of 140-180° C., for a period of 4-10 hrs, followed by the separation of catalyst from the above said reaction mixture by known methods to obtain the desired product.

    摘要翻译: 本发明提供了制备通式(1)的二烷基碳酸酯的方法,其中R =烷基(C 1 -C 8 -C 8)或C 6 所述方法包括在环状碳酸酯和醇之间的反应中,在固体双金属氰化物配合物催化剂的存在下,在温度 在140-180℃的范围内,持续4-10小时,然后通过已知方法从上述反应混合物中分离催化剂,得到所需产物。

    Process for the preparation of carbamates
    10.
    发明申请
    Process for the preparation of carbamates 有权
    制备氨基甲酸酯的方法

    公开(公告)号:US20070270605A1

    公开(公告)日:2007-11-22

    申请号:US11437859

    申请日:2006-05-22

    IPC分类号: C07C269/04 C07F7/00

    摘要: The present invention provides an improved process for the preparation of carbamates with high selectivity of pharmaceutical interest by an eco-friendly, non-toxic, phosgene-/isocyanate-/CO-free clean route through a reaction of amine, organic halide compound and carbon dioxide in the presence of a solid, reusable catalyst at moderate conditions and does not require additional cocatalyst/promoter as well as solvent

    摘要翻译: 本发明提供了一种通过环境友好,无毒,光气/异氰酸酯/无CO的清洁途径通过胺,有机卤化物和碳的反应制备药物感兴趣的高选择性的氨基甲酸酯的改进方法 在中等条件下在固体,可重复使用的催化剂存在下进行二氧化,并且不需要额外的助催化剂/促进剂以及溶剂