| abstract |
1. A cyclohexane-1,3-dione derivative of the formula (I) see diagramm : EP0070495,P18,F1 where R**1 is alkenyl of 3 or 4 carbon atoms, or phenyl, benzyl, 2-phenylethyl or phenylpropyl, each of which is unsubstituted or substituted by halogen, alkyl, alkoxy, nitro, cyano or sulfonyl, A is alkylene or alkenylene, each of which is of not more than 3 carbon atoms and may be substituted by 1 or 2 alkyl radicals of 1 to 5 carbon atoms, cyclohexyl, alkenyl of 2 or 3 carbon atoms, ethynyl or phenyl, R**2 is hydrogen, or alkoxycarbonyl, where alkoxy is of 1 or 2 carbon atoms, R**3 is alkyl of 1 to 4 carbon atoms, and R**4 is alkyl of 1 to 3 carbon atoms, alkenyl of 3 or 4 carbon atoms, propargyl, or haloalkenyl of 3 or 4 carbon atoms and 1 to 3 halogen atoms, and salts thereof. |