METHOD FOR ALDOL REACTION IN WATER
    42.
    发明授权
    METHOD FOR ALDOL REACTION IN WATER 有权
    程序对实现在水中的醛醇

    公开(公告)号:EP1375464B1

    公开(公告)日:2009-03-04

    申请号:EP02703945.2

    申请日:2002-03-08

    CPC classification number: C07C45/511

    Abstract: A method for an aldol reaction in water, characterized in that an aldehyde and an silyl enol ether is reacted in water as a medium in the presence of a boronic acid represented by the general formula (1): R R BOH (1) wherein R and R are hydrocarbon groups which may be the same or different and may have a substituent, a surfactant and a Brfnsted acid. The method for an aldol reaction in water allows the production of a product with high selectivity in high yield by the use of a boron source in an catalytic amount.

    PROCESS FOR THE ALLYLATION OF N-ACYLHYDRAZONES
    45.
    发明公开
    PROCESS FOR THE ALLYLATION OF N-ACYLHYDRAZONES 审中-公开
    VERFAHREN ZUR ALLYLIERUNG VON N-ACYLHYDRAZONEN

    公开(公告)号:EP1721890A1

    公开(公告)日:2006-11-15

    申请号:EP05710632.0

    申请日:2005-02-24

    CPC classification number: C07C241/02 C07B53/00 C07C2601/14 C07C243/38

    Abstract: [PROBLEMS] To provide a novel method for the allylation of N-acylhydrazones by which enantioselectively allylated N-acylhydrazines can be efficiently obtained.
    [MEANS FOR SOLVING PROBLEMS] A method for the production of enantioselectively allylated N-acylhydrazines represented by the general formula [3]:

    [wherein R° is an optionally substituted hydrocarbon group, an optionally substituted heterocyclic group, or -COOR 1 (wherein R 1 is a hydrocarbon group) ; R 2 is acyl; R 3 and R 4 are each hydrogen, or one of R 3 and R 4 is hydrogen and the other is a hydrocarbon group; and R 5 and R 6 are each independently hydrogen or a hydrocarbon group], characterized by reacting an N-acylhydrazone represented by the general formula [1]:

    [wherein R 0 and R 2 are as defined above] with an allylating agent such as allyltrichlorosilane or crotyltrichlorosilane in the presence of a chiral phosphine oxide.

    Abstract translation: [问题]提供N-酰腙的烯丙基化的新方法,通过该方法可以有效地获得对映选择性烯丙化的N-酰肼。 用于解决问题的手段制备由通式[3]表示的对映选择性烯丙化N-酰肼的方法:[其中R'是任选取代的烃基,任选取代的杂环基或-COOR 1(其中R 1是烃基); R 2是酰基; R 3和R 4各自为氢,R 3和R 4中的一个为氢,另一个为烃基; 并且R 5和R 6各自独立地为氢或烃基],其特征在于使由通式[1]表示的N-酰腙:[其中R 0和R 2如上定义]与烯丙基化试剂如 烯丙基三氯硅烷或巴豆基三氯硅烷在手性氧化膦存在下进行。

    PROCESS FOR ASYMMETRIC INTRAMOLECULAR (3+2) CYCLO-ADDITION OF HYDRAZONES
    48.
    发明公开
    PROCESS FOR ASYMMETRIC INTRAMOLECULAR (3+2) CYCLO-ADDITION OF HYDRAZONES 有权
    VERFAHREN ZUR ASYMMETRISCHEN INTRAMOLEKULAREN 3 + 2-CYCLOADDITION VON HYDRAZONEN

    公开(公告)号:EP1489072A1

    公开(公告)日:2004-12-22

    申请号:EP03710300.9

    申请日:2003-03-11

    CPC classification number: C07D231/56

    Abstract: An intramolecular [3+2] cycloaddition reaction of a hydrazone is carried out under a mild condition with a high stereoselectivity and yield by reacting a hydrazone derivative in the presence of an asymmetric catalyst system obtained by mixing a zirconium alkoxide represented by the following formula (I):

            Zr(OR) 4      (I)

    (wherein R is a hydrocarbon group which may have a substituent) with a binaphthol derivative represented by the following formula (II):
    (wherein Y 1 and Y 2 are each identical or different and denote a hydrogen atom or a halogen atom, and at least one of Y 1 and Y 2 denotes a halogen atom).

    Abstract translation: 腙的分子内Ä3+ 2u环加成反应在具有高立体选择性的温和条件下进行,并且通过使腙衍生物在由下式(I)表示的锆烷氧化物混合得到的不对称催化剂体系存在下反应, :具有下式(II)表示的联萘酚衍生物的Zr(OR)4(其中R为可具有取代基的烃基):其中Y 1和Y 2各自相同或相同, 不同,表示氢原子或卤素原子,Y 1和Y 2中的至少一个表示卤素原子)。

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