the new compounds containing a urea group cyclises herbicide compositions, method of preparation and

摘要

Novel compounds of the formula O PARALLEL C ANGLE -NN-R I ANGLE A wherein A is a straight or branched chain alkylene of 2 to 6 carbon atoms, X is selected from the group consisting of hydrogen, halogen, -CF3, -NO2, acyl of an organic carboxylic acid of 1 to 6 carbon atoms, alkyl and alkoxy of 1 to 6 carbon atoms and alkenyloxy of 2 to 6 carbon atoms optionally substituted with halogen, Y is selected from the group consisting of hydrogen, halogen and alkyl and alkoxy of 1 to 6 carbon atoms and R is selected from the group consisting of alkoxy of 1 to 4 carbon atoms, alkoxycarbonyl of 2 to 6 carbon atoms and chloroacetyl which have herbicidal properties.