CYCLOHEXANE-1,3-DIONE DERIVATIVES, THEIR PREPARATION AND THEIR USE FOR CONTROLLING UNDESIRABLE PLANT GROWTH

摘要

Cyclohexane-1,3-dione derivatives of the formula < IMG > where R1 is C1-C4-alkyl, R2 is C1-C5-alkyl, unsubstituted or halogen-substituted C2-C5-alkenyl or C2-C5-alkynyl, R3 is C1-C10-alkyl, which contains 2, 3 or 4 of the hetero-atoms 0 and/or S and/or the groups -SO- and/or -SO2- in any desired position and R4 is hydrogen, cyano, methyl or -COOR5, where R5 is C1-C5-alkyl, and salts of these compounds are prepared and are used for controlling undesirable plant growth.