Phenylsulfonylureas processes for their preparation and their use as herbicides and plant growth regulators

摘要

Compounds of the formula (I) and their salts as defined in claim 1,in whichR1 is CO-Q-R8, where R8=H or RR2 and R3 are H or (C1-C4)alkyl,R4 is H, R, RO, OH, RCO, RSO2, PhSO2R5 is RSO2, PhSO2, PhCO, RNHSO2, R2NSO2, RCO, CHO, COCOR', CW-T-R9, CW-NR10R11, CW-N(R12)2 orR4 and R5 together are the chain (CH2)mB or -B1-(CH2)m1B- where B=SO2, m=3, 4; m1=2, 3;T and W=O, S; Q=O, S, NR13 where R13=H, R;R6=H, R, RO, RCO, ROCO, Hal, NO2, CN;R7=H, CH3; R9=R; R10, R11=H, R; N(R12)2=heterocycleA=pyrimidinyl and triazinyl radical or an analog thereof,where R=(substituted) aliphatic hydrocarbon radical, are suitable as selective herbicides. They are prepared by analogous processes via sulfonamides, some of which are new, of the formula (II) (see claim 4).