A process for the preparation of carbamates
    1.
    发明公开
    A process for the preparation of carbamates 失效
    Verfahren zur Herstellung von Carbamaten。

    公开(公告)号:EP0393789A1

    公开(公告)日:1990-10-24

    申请号:EP90200960.4

    申请日:1990-04-18

    IPC分类号: C07C269/04 C07C271/30

    CPC分类号: C07C269/04

    摘要: A process for preparing carbamates having the general formula I:
    wherein R¹ represents a hydrogen atom or an alkyl group, R² represents an optionally substituted aryl group and R³ represents an alkyl, haloalkyl, alkenyl, haloalkenyl, alkynyl, haloalkynyl group or an optionally substituted aryl or heteroaryl group, comprises reacting an amine having the general formula II:
    wherein R¹ and R² are as hereinbefore defined, or a symmetrical urea having the general formula III:
    wherein R¹ and R² are as hereinbefore defined, carbon monoxide and oxygen in the presence of a catalyst comprising:

    a) palladium;
    b) an organo-nitrogen or organo-phosphorous ligand having a lone pair of electrons; and
    c) a metal salt comprising a cation of a metal selected from the group consisting of copper, iron, vanadium, chromium, zinc, tin, uranium and cerium, and an anion of an acid having a pK of less than 2, except of a hydrohalogenic acid.

    摘要翻译: 一种制备具有通式I的氨基甲酸酯的方法:其中R 1表示氢原子或烷基,R 2表示任意取代的芳基,R 3表示烷基,卤代烷基,烯基 ,卤代烯基,炔基,卤代炔基或任选取代的芳基或杂芳基,包括使具有通式II的胺:其中R 1和R 2如上文所定义的具有通式II:CHEM的胺或具有 通式III:其中R 1和R 2如上文所定义的一氧化碳和氧在催化剂存在下,包括:a)钯; b)具有一对电子的有机氮或有机磷配体; 和c)包含选自铜,铁,钒,铬,锌,锡,铀和铈的金属的阳离子和pK小于2的酸的阴离子的金属盐,除了 氢卤酸。 Ø

    A process for the preparation of aromatic ureas
    5.
    发明公开
    A process for the preparation of aromatic ureas 失效
    赫尔斯特朗

    公开(公告)号:EP0395144A1

    公开(公告)日:1990-10-31

    申请号:EP90200959.6

    申请日:1990-04-18

    IPC分类号: C07C273/18 C07C275/28

    摘要: A process for preparing aromatic ureas having the general formula I:
    wherein each of R¹ and R³ independently represents a hydrogen atom, an alkyl or cycloalkyl group, R² represents an optionally substituted aryl or heteroaryl group, and R⁴ represents an alkyl, alkenyl, alkynyl or alkoxy group, or an optionally substituted cycloalkyl, aryl or heteroaryl group, which process comprises reacting an aromatic amine having the general formula II:
    wherein R¹ and R² are as hereinbefore defined, or a symmetrical aromatic urea having the general formula III:
    wherein R¹ and R² are as hereinbefore defined, with an amine having the general formula IV:
    wherein R³ and R⁴ are as hereinbefore defined, and carbon monoxide in the presence of a catalyst comprising:

    a) palladium;
    b) an organo-nitrogen or organo-phosphorous ligand having a lone pair of electrons; and
    c) a metal salt comprising a cation of a metal selected from the group consisting of copper, iron, vanadium chromium, zinc, tin, uranium and cerium, and an anion of an acid having a pK of less than 2, except of a hydrohalogenic acid.

    摘要翻译: 用于制备具有通式I的芳香脲的方法:其中R 1和R 3各自独立地表示氢原子,烷基或环烷基,R 2表示任选取代的芳基或杂芳基 并且R 4表示烷基,烯基,炔基或烷氧基,或任选取代的环烷基,芳基或杂芳基,该方法包括使具有通式II的芳族胺:其中R 1, 或R 2如上所定义,或具有通式III的对称芳族脲:其中R 1和R 2如上文所定义的具有通式IV的胺:CHEM 其中R 3和R 4如上所定义,和一氧化碳在催化剂存在下,包括:a)钯; b)具有一对电子的有机氮或有机磷配体; 和c)包含选自铜,铁,钒铬,锌,锡,铀和铈的金属的阳离子和pK小于2的酸的阴离子的金属盐,除了 氢卤酸。

    Process for the preparation of phenyl ureas
    6.
    发明公开
    Process for the preparation of phenyl ureas 失效
    Verfahren zur Herstellung vn Phenylharnstoffen。

    公开(公告)号:EP0319111A2

    公开(公告)日:1989-06-07

    申请号:EP88202745.1

    申请日:1988-11-29

    IPC分类号: C07C275/28

    CPC分类号: C07C273/1809 F02B61/045

    摘要: A process for the preparation of phenyl ureas, which comprises reacting a nitrobenzene with an amine and carbon monoxide at an elevated temperature in the presence of a palladium catalyst, the amine being supplied continuously or stepwise during the period of the reaction.

    摘要翻译: 一种制备苯基脲的方法,其包括在钯催化剂存在下,在升高的温度下使硝基苯与胺和一氧化碳反应,在反应期间连续或逐步供应胺。

    Co-oligomerization process
    8.
    发明公开
    Co-oligomerization process 失效
    共oligomerisierungsverfahren。

    公开(公告)号:EP0443686A2

    公开(公告)日:1991-08-28

    申请号:EP91200367.0

    申请日:1991-02-20

    IPC分类号: C07C2/34

    摘要: A process for the preparation of linear olefins comprises reacting ethene with at least one further alpha olefin under oligomerizing conditions in the presence of a catalyst system comprising a combination of a first component which is a bis(cyclopentadienyl) Group IVA metal compound containing a substituent capable of reacting with a cation and a second component which is a compound having a bulky anion containing a plurality of boron atoms and which is substantially non-coordinating under the reaction conditions and a cation, and recovering an oligomeric product comprising linear olefins.

    摘要翻译: 用于制备线性烯烃的方法包括使乙烯与至少一种其它α-烯烃在低聚条件下在催化剂体系存在下反应,所述催化剂体系包含第一组分,其是含有取代基的双(环戊二烯基)ⅣA金属化合物 与阳离子和第二组分反应,该组分是具有多个硼原子的大体积阴离子并且在反应条件和阳离子下基本上不配位的化合物,并回收包含直链烯烃的低聚产物。

    Preparation of conjugated dienes
    9.
    发明公开
    Preparation of conjugated dienes 失效
    Verfahren zur Herstellung von konjugierten Dienen。

    公开(公告)号:EP0370563A1

    公开(公告)日:1990-05-30

    申请号:EP89202888.7

    申请日:1989-11-14

    IPC分类号: C07C11/12 C07C2/74

    摘要: A process for the preparation of a compound of general formula
    in which R¹ represents a hydrogen atom or a methyl group, one of R² and R³ represents a hydrogen atom and the other of R² and R³ is the same as R¹, which comprises reacting a compound of general formula
    R¹-CH=C=CH₂      (II)
    with a salt of formic acid in the presence of a catalyst system comprising a palladium salt and a phosphorus compound of general formula
    P(OX) n (X) 3-n       (III)
    in which n is 0,1,2 or 3 and each X independently represents an alkyl, alkenyl, aryl, aralkyl, alkaryl or cycloalkyl group, and recovering the desired compound of formula (I).

    摘要翻译: 制备通式的化合物的方法,其中R 1表示氢原子或甲基,R 2和R 3之一表示氢原子,另一个R' 2>和R 3与R 1相同,其包括在催化剂体系存在下使通式R 1 -CH = C = CH 2(II)的化合物与甲酸盐反应 包括钯盐和通式P(OX)n(X)3-n(III)的磷化合物,其中n为0,1,2或3,并且每个X独立地表示烷基,烯基,芳基,芳烷基, 烷芳基或环烷基,并回收所需的式(I)化合物。