Process for the preparation of 3-(substituted
phenyl)-5-alkylidene-1,3-oxazolidine-2,4-dione derivatives
    2.
    发明授权
    Process for the preparation of 3-(substituted phenyl)-5-alkylidene-1,3-oxazolidine-2,4-dione derivatives 失效
    3-(取代苯基)-5-亚烷基-1,3-恶唑烷-2,4-二酮衍生物的制备方法

    公开(公告)号:US6090946A

    公开(公告)日:2000-07-18

    申请号:US894655

    申请日:1997-12-15

    IPC分类号: C07C67/31 C07D263/44

    CPC分类号: C07D263/44 C07C67/31

    摘要: The present invention provides an industrial process for efficiently preparing a 3-(substituted phenyl)-5-isopropylidene-1,3-oxazolidine-2,4-dione derivative having a potent herbicidal activity without using phosgene or the like. The present invention relates to a process for preparing a 3-(substituted phenyl)-5-alkylidene-1,3-oxazolidine-2,4-dione derivative represented by general formula (III), which comprises reaction of an N-(substituted phenyl)carbamate represented by general formula (I) with a 2-hydroxy-3-alkenoate represented by-general formula (II) or with a 3-alkoxy-2-hydroxyalkanoate represented by general formula (IV): ##STR1## (wherein Ar is a substituted phenyl group, R.sup.1 is an alkyl group having a carbon number of from 1 to 6, R.sup.2 and R.sup.3 are independently hydrogen atoms or alkyl groups having carbon numbers of from 1 to 12, and R.sup.4 and R.sup.5 are independently alkyl groups having carbon numbers of from 1 to 6).

    摘要翻译: PCT No.PCT / JP96 / 00430 Sec。 371 1997年12月15日第 102(e)日期1997年12月15日PCT提交1996年2月26日PCT公布。 公开号WO96 / 26930 PCT。 日本1996年9月6日本发明提供了一种不使用光气等有效制备具有强效除草活性的3-(取代苯基)-5-异亚丙基-1,3-恶唑烷-2,4-二酮衍生物的工业方法 。 本发明涉及一种制备由通式(III)表示的3-(取代苯基)-5-亚烷基-1,3-恶唑烷-2,4-二酮衍生物的方法,该方法包括N-(取代的 苯基)氨基甲酸酯与由通式(II)表示的2-羟基-3-烯酸酯或由通式(IV)表示的3-烷氧基-2-羟基链烷酸酯反应:(其中Ar为 取代的苯基,R1是碳数为1至6的烷基,R2和R3独立地为氢原子或碳数为1至12的烷基,R4和R5独立地为碳数为 从1到6)。

    Hydantoin derivatives and herbicides containing said derivatives as
active ingredient
    5.
    发明授权
    Hydantoin derivatives and herbicides containing said derivatives as active ingredient 失效
    含有所述衍生物的乙内酰脲衍生物和除草剂作为活性成分

    公开(公告)号:US5883049A

    公开(公告)日:1999-03-16

    申请号:US836154

    申请日:1997-08-18

    IPC分类号: C07D471/04 A01N43/90

    CPC分类号: C07D471/04 A01N43/90

    摘要: This invention provides with novel hydantoin derivatives, processes for preparing them, and herbicides containing said derivatives as active ingredient.The hydantoin derivative of this invention represented by the general formula (1): ##STR1## is produced by reacting an arylisocyanate derivative or an arylisothiocyanate derivative represented by the general formula (2): ##STR2## with a dehydropipecolic acid derivative represented by the general formula (3): ##STR3##

    摘要翻译: PCT No.PCT / JP95 / 02683 Sec。 371日期:1997年8月18日 102(e)日期1997年8月18日PCT 1995年12月26日PCT PCT。 公开号WO96 / 20195 日期1996年7月4日本发明提供了新的乙内酰脲衍生物,其制备方法和含有所述衍生物作为活性成分的除草剂。 由通式(1)表示的本发明的乙内酰脲衍生物:通过使通式(2)表示的异氰酸芳基酯衍生物或异硫氰酸酯衍生物:(2)与脱水异构体 由通式(3)表示的酸衍生物:< IMAGE>(3)

    Pyrazole-1-carboxylate derivatives, process for the production thereof and process for the production of pyrazole derivatives
    7.
    发明授权
    Pyrazole-1-carboxylate derivatives, process for the production thereof and process for the production of pyrazole derivatives 失效
    吡唑-1-羧酸酯衍生物,其制备方法和吡唑衍生物的制备方法

    公开(公告)号:US07767827B2

    公开(公告)日:2010-08-03

    申请号:US11915016

    申请日:2006-05-22

    IPC分类号: C07D231/10

    CPC分类号: C07D231/20

    摘要: Disclosed are pyrazole-1-carboxylate derivatives of the general formula (1), (wherein symbols are as defined in the specification), a process for the production thereof and processes for producing herbicidally active 3-aryloxypyrazole-1-carboxamide derivatives from the above compound and an intermediate therefor. According to this invention, there can be industrially advantageously produced 3-aryloxypyrazole-1-carboxamide derivatives that does not cause chemical damage on crops but exhibits excellent herbicidal activity against weeds that impair the growth of such crops.

    摘要翻译: 公开了通式(1)的吡唑-1-羧酸酯衍生物(其中符号如说明书中所定义),其制备方法和从上述产生除草活性3-芳氧基吡唑-1-甲酰胺衍生物的方法 化合物及其中间体。 根据本发明,可以在工业上有利地生产不对作物造成化学损害的3-芳氧基吡唑-1-甲酰胺衍生物,但是对于损害这些作物生长的杂草显示出优异的除草活性。

    Process for the production of aniline derivatives
    8.
    发明授权
    Process for the production of aniline derivatives 失效
    苯胺衍生物生产工艺

    公开(公告)号:US5639915A

    公开(公告)日:1997-06-17

    申请号:US401781

    申请日:1995-03-10

    摘要: Industrial process for the efficient production of aniline derivatives which are important intermediates for the manufacture of oxazolidinedione derivatives and tetrahydrophthalimide derivatives which are useful as active ingredients of herbicides. The process starts from 2,4-dihalo-5-aminophenol or bis(2,4-dihalo-5-aminophenyl)carbonate and selectively cycloalkylates or alkynylates the hydroxy group without protecting the amino group, whereby aniline derivatives having the cycloalkyloxy group or alkynyloxy group can be produced in high yield.

    摘要翻译: PCT No.PCT / JP93 / 01296 Sec。 371 1995年3月10日 102(e)1995年3月10日PCT PCT 1993年9月10日PCT公布。 公开号WO94 / 06753 日期1994年3月31日有效生产苯胺衍生物的工业过程,苯胺衍生物是制备用作除草剂活性成分的恶唑烷二酮衍生物和四氢邻苯二甲酰亚胺衍生物的重要中间体。 该方法从2,4-二卤代-5-氨基苯酚或双(2,4-二卤代-5-氨基苯基)碳酸酯开始,并且选择性地使羟基环烷基化或炔基化而不保护氨基,由此得到具有环烷氧基或炔氧基的苯胺衍生物 组可以高产量生产。