abstract |
Compounds of the formula wherein R n is hydrogen, halogen or alkyl, Z is oxygen or sulfur, R 1 and R 2 independently of one another are hydrogen, alkyl, alkoxyalkyl, haloalkyl or phenalkyl or together are an (optionally substituted) C2-C 4 -alkylene bridge and R 3 is hydrogen or alkyl are effective antidots for the protection of crops against phytotoxic side effects of herbicides. |