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8 条记录 (耗时 0.021 秒)

    VERFAHREN ZUR HERSTELLUNG VON ASTAXANTHIN- UND CANTHAXANTHIN-VORPRODUKTEN
    4.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON ASTAXANTHIN- UND CANTHAXANTHIN-VORPRODUKTEN 审中-公开

    公开(公告)号：EP1718589A2

    公开(公告)日：2006-11-08

    申请号：EP04803760.0

    申请日：2004-12-10

    申请人： BASF Aktiengesellschaft

    发明人： RUMPF, Bernd ,  DECKERT, Petra ,  MÜLLER, Thomas ,  GRIMMER, Johannes

    IPC分类号： C07C45/00

    CPC分类号： C07C403/08 ,  C07C2601/16 ,  Y02P20/55

    摘要： The invention relates to a method for producing cyclohexenone derivatives of general formula (I), wherein R1 represents hydrogen or OH; R2 represents (Ia), comprising the following steps: (a) hydrolyzing a cyclohexenol compound of formula (II), wherein R3 represents hydrogen and R4 represents C1-C6-alkoxy or R3 and R4 represent vicinal hydroxy groups, which carry a common acetal protective group or a ketone protective group, R5 represents (IIa), and R6 represents a protected hydroxy group, in the absence of an organic solvent and in the presence of an acid catalyst; and; (b) extracting the reaction mixture by using a polar extracting agent.

    摘要翻译： 本发明涉及一种制备通式（I）的环己烯酮衍生物的方法，其中R 1表示氢或OH; R 2表示（Ia），包括以下步骤：（a）水解式（II）的环己烯醇化合物，其中R 3表示氢，R 4表示C 1 -C 6 - 烷氧基或R 3 和R 4代表连位羟基，其携带共同的缩醛保护基或酮保护基，R 5代表（IIa），R 6表示保护的羟基，在不存在有机溶剂的情况下 并在酸催化剂存在下进行; 和; （b）使用极性萃取剂萃取反应混合物。

    VERFAHREN ZUR HERSTELLUNG VON LINEAREM PENTENNITRIL
    6.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON LINEAREM PENTENNITRIL 有权
    用于生产线性戊烯腈

    公开(公告)号：EP1716105A1

    公开(公告)日：2006-11-02

    申请号：EP05707029.4

    申请日：2005-01-27

    申请人： BASF Aktiengesellschaft

    发明人： JUNGKAMP, Tim ,  BAUMANN, Robert ,  BARTSCH, Michael ,  HADERLEIN, Gerd ,  LUYKEN, Hermann ,  SCHEIDEL, Jens ,  AECHTNER, Tobias ,  PFAB, Peter ,  DECKERT, Petra ,  BASSLER, Peter ,  SIEGEL, Wolfgang

    IPC分类号： C07C253/10 ,  C07C255/07

    CPC分类号： C07C253/30 ,  C07C253/10 ,  Y02P20/582 ,  C07C255/07

    摘要： The invention relates to a method for producing 3-pentenenitrile, characterised by the following steps: (a) isomerisation of an educt stream containing 2-methyl-3-butenenitrile on at least one dissolved or dispersed isomerisation catalyst to form a stream (1), which contains the isomerisation catalyst(s), 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile; (b) distillation of the stream (1) to obtain a stream (2) as the overhead product, which contains 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile and a stream (3) as the bottom product, which contains the isomerisation catalyst(s); (c) distillation of the stream (2) to obtain a stream (4) as the overhead product, which is enriched with (Z)-2-methyl-2-butenenitrile in comparison to stream (2), (in relation to the sum of all pentenenitriles in stream (2)) and a stream (5) as the bottom product, which is enriched with 3-pentenenitrile and 2-methyl-3-butenenitrile in comparison to stream (2), (in relation to the sum of all pentenenitriles in stream (2); (d) distillation of stream (5) to obtain a stream (6) as the bottom product, which contains 3-pentenenitrile and a stream (7) as the head product, which contains 2-methyl-3-butenenitrile.

    VERFAHREN ZUR ABTRENNUNG VON ASCORBINSÄURE AUS EINEM POLAREN, ASCORBINSÄURE UND 2-KETO-L-GULONSÄURE ENTHALTENDEN LÖSUNGSMITTEL
    8.
    发明公开
    VERFAHREN ZUR ABTRENNUNG VON ASCORBINSÄURE AUS EINEM POLAREN, ASCORBINSÄURE UND 2-KETO-L-GULONSÄURE ENTHALTENDEN LÖSUNGSMITTEL 有权
    VERFAHREN ZUR ABTRENNUNG VONASCORBINSÄUREAUS EINEM POLAREN，ASCORBINSÄUREUND 2-KETO-L-GULONSÄUREENTHALTENDENLÖSUNGSMITTEL

    公开(公告)号：EP1523477A1

    公开(公告)日：2005-04-20

    申请号：EP03763731.1

    申请日：2003-07-07

    申请人： BASF AKTIENGESELLSCHAFT

    发明人： KAIBEL, Gerd ,  MERGER, Martin ,  DOMSCHKE, Thomas ,  DECKERT, Petra ,  SAUER, Friedrich

    IPC分类号： C07D307/62

    CPC分类号： C07D307/62 ,  Y02P20/582

    摘要： The invention relates to a method for the separation of ascorbic acid from a mixture containing ascorbic acid and 2-keto-L-gulonic acid in a polar, preferably aqueous solvent, by means of liquid/liquid extraction using an amide. The method preferably also comprises steps for the back-extraction of the ascorbic acid, recycling of the extraction solvent and/or the back extraction solvent and for isolation of the ascorbic acid from the back extraction solvent. The invention further relates to a method for the production of ascorbic acid from KGA and isolation of the ascorbic acid so produced.

    摘要翻译： 本发明涉及一种从含有抗坏血酸和2-酮基-L-古洛糖酸的混合物中通过使用酰胺的液/液萃取在极性，优选水性溶剂中分离抗坏血酸的方法。 该方法优选还包括反萃取抗坏血酸的步骤，萃取溶剂和/或反萃取溶剂的循环以及从反萃取溶剂中分离抗坏血酸。 本发明还涉及由KGA生产抗坏血酸并分离如此生产的抗坏血酸的方法。