abstract |
The invention is concerned with novel compounds of the formula ##STR1## wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 and R 7 have the significances given in the description, as well as enol ethers and salts thereof and their manufacture, weed control compositions which contain such compounds as the active substance and the use of the active substances or compositions for the control of weeds. The invention is also concerned with certain novel starting materials and their production. |