申请人:Hoechst Aktiengesellschaft
公开号:US05306695A1
公开(公告)日:1994-04-26
Compounds of the formula I ##STR1## in which n is 0-6, R.sup.1 is alkyl, haloalkyl, cycloalkyl, halocycloalkyl, phenyl or halogenated phenyl, R.sup.2 is Hal, CN, alkyl, haloalkyl, alkoxy, haloalkoxy, thioalkyl, R.sup.a SO.sub.2 --, R.sup.a SO.sub.2 O--, R.sup.a SO.sub.2 NR.sup.6, R.sup.a and R.sup.b being alkyl or haloalkyl, and R.sup.3 is H, Hal, alkyl, haloalkyl, alkoxy, haloalkoxy or alkylthio, and R.sup.4 is haloalkyl, are suitable as selective herbicides and as growth regulators. To prepare them, a cyclohexanedione can be reacted a) with a 4-oxy-substituted benzoyl chloride and the resulting enol ether can be rearranged, or b) with a benzoyl cyanide. The benzoyl chloride or benzoyl cyanide required can be obtained from correspondingly substituted toluenes via the carboxylic acid.
公式I的化合物##STR1##其中n为0-6,R.sup.1为烷基,卤代烷基,环烷基,卤代环烷基,苯基或卤代苯基,R.sup.2为Hal,CN,烷基,卤代烷基,烷氧基,卤代烷氧基,
硫代烷基,R.sup.a SO.sub.2 --,R.sup.a SO.sub.2 O--,R.sup.a SO.sub.2 NR.sup.6,其中R.sup.a和R.sup.b为烷基或卤代烷基,R.sup.3为H,Hal,烷基,卤代烷基,烷氧基,卤代烷氧基或烷
硫基,R.sup.4为卤代烷基,适用于选择性
除草剂和生长调节剂。为了制备它们,可以将
环己酮与a)4-氧基取代的
苯甲酰氯反应,并使得到的烯醚重排,或者b)与苯甲酰
氰反应。所需的
苯甲酰氯或苯甲酰
氰可以通过相应取代
甲苯经由
羧酸获得。