Substituted tetrahydrofuran herbicides
    2.
    发明公开
    Substituted tetrahydrofuran herbicides 失效
    Herbizide Substierte四氢呋喃。

    公开(公告)号:EP0064306A1

    公开(公告)日:1982-11-10

    申请号:EP82200461.0

    申请日:1982-04-15

    摘要: Novel compounds of the general formula,
    wherein each of R°, R, R 1 , R 2 , and R 3 independently represents a hydrogen atom or an alkyl group or R° and R together represent an alkylene group; X represents one of the groups
    wherein R 4 represents a hydrogen atom or an optionally substituted aryl or alkyl group and R 5 represents a hydrogen atom, an alkyl group, an alkenyl group or an alkynyl group; and Ar represents an optionally substituted fully unsaturated ring having 5 or 6 atoms in the ring of which one is a nitrogen atom and the remainder are carbon atoms, or the N-oxide or an acid addition salt thereof, or Ar represents an optionally substituted phenyl group; exhibit useful herbicidal properties.

    摘要翻译: 新的通式为CHEM的化合物,其中R 0,R 1,R 2,R 2和R 3各自独立地表示氢原子或烷基或R 0和 R一起表示亚烷基; X表示中的一个,其中R 4表示氢原子或任选取代的芳基或烷基,R 5表示氢原子,烷基,烯基或炔基; Ar表示在环中具有5或6个原子的任选取代的完全不饱和环,其中一个为氮原子,其余为碳原子,或其N-氧化物或其酸加成盐,或Ar表示任选取代的苯基 组; 表现出有用的除草性能。

    Azetidine derivatives; process for their preparation; and their use as intermediates
    3.
    发明公开
    Azetidine derivatives; process for their preparation; and their use as intermediates 失效
    Azetidinderivate,Verfahren zu ihrer Herstellung und ihre Verwendung als Zwischenprodukte。

    公开(公告)号:EP0190786A1

    公开(公告)日:1986-08-13

    申请号:EP86200091.6

    申请日:1986-01-20

    IPC分类号: C07D205/08 C07D205/04

    CPC分类号: C07D205/08 C07D205/04

    摘要: Substituted azetidinone carboxylates of the general formula I
    wherein R, represents a benzyl, benzhydryl or tosyl group and R 2 represents a hydrogen atom or an alkyl group of up to 6 carbon atoms;

    process for the preparation of azetidinones of formula I, which comprises oxidising an N-substituted dioxopyrrolidine of general formula II:-

    process for the preparation of an N-substituted-3-hydroxymethyl azetidine derivative of general formula III

    which comprises reduction of an N-substituted azetidinone carboxylate of general formula I above.

    摘要翻译: 取代的通式I 的氮杂环丁酮羧酸盐,其中R 1表示苄基,二苯甲基或甲苯磺酰基,R 2表示氢原子或至多6个碳原子的烷基; 用于制备式I的氮杂环丁酮的方法,其包括将通式II的N-取代的二氧代吡咯烷氧化:制备通式III的N-取代-3-羟甲基氮杂环丁烷衍生物的方法,其中 包括还原上述通式I的N-取代的氮杂环丁酮羧酸酯。 t