Compound, composition of herbicide, process to damage severely or kill unwanted plants.Process for controlling selectively the growth of herbs monocotiledoneas and process for the synthesis of a compound

摘要

The invention concerns novel compounds of the formula I IMAGE I wherein: Y is selected from phenyl, furyl, thienyl and pyrrolyl rings (each optionally substituted by group X), optionally branched alkylene or alkylenethio(oxy)alkylene; X which may be the same or different are independently selected from halogen, nitro, alkyl, substituted alkyl, hydroxy, alkoxy, carboxy, alkoxycarbonyl, alkylthio, sulfamoyl, substituted sulfamoyl, amino, substituted amino and alkanoyl; R1 is selected from hydrogen, acyl and an inorganic or organic cation; R2 is selected from alkyl, substituted alkyl, alkenyl, haloalkenyl and alkynyl; R3 is selected from alkyl; and R4 is selected from hydrogen, alkyl, and alkoxycarbonyl. The compounds of the invention show herbicidal properties and plant growth regulating properties and in further embodiments 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.