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Abstract

The invention concerns novel compounds of the formula I ##STR1## wherein: the substituent X is chosen from cyano, carbamoyl and thiocarbamoyl; Z is selected from hydrogen, methyl, C.sub.1 to C.sub.4 alkanoyl, sulfamoyl, dimethylsulfamoyl and trifluoroacetylamino; R.sup.1 is selected from hydrogen, acyl and an inorganic or organic cation; R.sup.2 is selected from alkyl, substituted alkyl, alkenyl, haloalkenyl and alkynyl; R.sup.3 is selected from alkyl; and R.sup.4 is selected from hydrogen, alkyl, and alkoxycarbonyl. The compounds of the invention show herbicidal properties and plant growth regulating properties and in further embodiments and the invention provides processes for the preparation of compounds of formula I, intermediates useful in the preparation of the compounds of formula I, compositions containing as active ingredient a compound of formula I, and herbicidal and plant growth regulating processes utilizing compounds of formula I.

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First Claim