Chemistry: fertilizers – Processes and products – Forms or conditioning
Patent
1989-11-02
1992-01-28
Gerstl, Robert
Chemistry: fertilizers
Processes and products
Forms or conditioning
548204, A01N 4378
Patent
active
050840835
ABSTRACT:
A method of killing or controlling unwanted plants by applying to the plant on to a locus thereof an effective amount of a compound of formula (I) ##STR1## or a salt thereof: wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are independently selected from hydrogen, hydroxy, alkyl, alkoxy, alkylcarbonyl, halogen, cyano, nitro, haloalkyl and haloalkoxy; R.sup.6 is hydrogen, hydroxy, amino, lower alkyl, halogen, cyano, haloalkyl, nitro, aryl, or a group C(O).sub.m R.sup.10, wherein R.sup.10 is hydrogen, alkyl, alkenyl, alkynyl or phenyl any of which may be optionally substituted and m is 1 or 2; R.sup.7 is hydrogen, lower alkyl, haloalkyl, C(O).sub.m R.sup.10 or halogen; or R.sup.6 and R.sup.7 together form an optionally substituted alkylene chain of 2 or 3 carbon atoms; R.sup.8 is hydrogen, lower alkyl or halogen or the group R.sup.7 and R.sup.8 together form an oxo group; and the group CZR.sup.9 is carboxy or an ester thereof, or R.sup.9 is a group SR.sup.10 or NR.sup.11 R.sup.12 wherein R.sup.11 is hydrogen or alkyl and R.sup.12 is hydrogen, alkyl, S(O).sub.n R.sup.10 wherein n is 0, 1 or 2; or R.sup.9 is a group NR.sup.11 NR.sup.13 R.sup.14 wherein R.sup.11, R.sup.13 and R.sup.14 are independently selected from hydrogen or alkyl; or R.sup.9 is a group --.sym.NR.sup.11 NR.sup.13 R.sup.14 R.sup.20 x.crclbar. wherein R.sup.11, R.sup.13, R.sup.14 and R.sup.20 are each hydrogen or alkyl, and x.sup.- is an agriculturally acceptable anion, and z is oxygen or sulphur.
Herbicidal compositions containing compounds of formula (I) are also claimed together with certain novel sub groups of compounds of formula (I) and processes for their preparation.
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McEvoy et al., J. Med. Chem. 15, 850 (1972).
Bansal Harjinder S.
Kay Ian T.
Lewis Terence
Sunley Raymond L.
Ackerman Joel G.
Gerstl Robert
Imperial Chemical Industries plc
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