| abstract |
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). |