The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 28, 1992
Filed:
Nov. 02, 1989
Terence Lewis, Quintilis, GB;
Harjinder S Bansal, Chisbury Close, GB;
Raymond L Sunley, Mallard Close, GB;
Ian T Kay, Mousehole, GB;
Imperial Chemical Industries PLC, London, GB;
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.