Patent number: 6239306
Abstract: Compounds of the formula (I) and their salts as defined in claim 1,
in which
R1 is CO—Q—R8, where R8=H or R
R2 and R3 are H or (C1-C4)alkyl,
R4 is H, R, RO, OH, RCO, RSO2, PhSO2
R5 is RSO2, PhSO2, PhCO, RNHSO2, R2NSO2, RCO, CHO, COCOR′, CW—T—R9, CW—NR10R11, CW—N(R12)2 or
R4 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=heterocycle
A=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).
Type:
Grant
Filed:
February 1, 1999
Date of Patent:
May 29, 2001
Assignee:
Hoechst Schering AgrEvo GmbH
Inventors:
Klaus Lorenz, Lothar Willms, Klaus Bauer, Hermann Bieringer
Patent number: 5925597
Abstract: Compounds of the formula (I) and their salts as defined in claim 1, ##STR1## in which R.sup.1 is CO--Q--R.sup.8, where R.sup.8 =H or RR.sup.2 and R.sup.3 are H or (C.sub.1 -C.sub.4)alkyl,R.sup.4 is H, R, RO, OH, RCO, RSO.sub.2, PhSO.sub.2R.sup.5 is RSO.sub.2, PhSO.sub.2, PhCO, RNHSO.sub.2, R.sub.2 NSO.sub.2, RCO, CHO, COCOR', CW--T--R.sup.9, CW--NR.sup.10 R.sup.11, CW--N(R.sup.12).sub.2 orR.sup.4 and R.sup.5 together are the chain (CH.sub.2).sub.m B or --B.sup.1 --(CH.sub.2).sub.m1 B-- where B=SO.sub.2, CO; m=3, 4; m.sup.1 =2, 3;T and W=O, S; Q=O, S, NR.sup.13 where R.sup.13 =H, R;R.sup.6 =H, R, RO, RCO, ROCO, Hal, NO.sub.2, CN;R.sup.7 =H, CH.sub.3 ; R.sup.9 =R; R.sup.10, R.sup.11 =H, R; N(R.sup.12).sub.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).
Type:
Grant
Filed:
March 31, 1997
Date of Patent:
July 20, 1999
Assignee:
Hoechst Schering AgrEvo GmbH
Inventors:
Klaus Lorenz, Lothar Willms, Klaus Bauer, Hermann Bieringer