Bicyclic ketones having biological activity
    47.
    发明授权
    Bicyclic ketones having biological activity 失效
    具有生物活性的双系克隆

    公开(公告)号:US3821307A

    公开(公告)日:1974-06-28

    申请号:US13925471

    申请日:1971-04-30

    发明人: HOCH P

    摘要: Bicyclic ketones of the formula

    WHEREIN R1, R2, R3, R4, X1, X2, X3, X4 and X5 are certain substituents selected from hydrogen, halogen, alkyl, alkenyl, halogenated alkyl, halogenated alkenyl, alkoxy, hydrocarbyl, halogen-substituted hydrocarbyl, carboxy, hydroxy-substituted alkyl, alkoxy-substituted alkyl, and hydroxy-substituted alkoxyalkyl, with at least two of X1, X2, X3 and X4 being halogen, and X6 is halogen. The bicyclic ketones are made by treating a corresponding tricyclic hemiketal with phosphorus halide and hydrolyzing. The bicyclic ketones are useful as chemical intermediates and as insecticides.