Substituted semicarbazones, thiosemicarbazones and isothiosemicarbazones and salts thereof, intermediates therefor, synthesis thereof, and the use of said compounds for the control of weeds.
The invention relates to novel compounds of formula (A)
wherein R² is the group -C(=NR¹⁰)-SR⁹ or -C(=X)-NHR¹⁰ and R, R³, R⁴, R⁹ and R¹⁰ are as stated in the specification, the synthesis thereof, the use of said compounds for the control of weeds and compositions for weed control comprising such compounds.