Herbicidal compositions

Details Herbicidal compositions Herbicidal compositions

1991-09-19

1993-01-26

Gerstl, Robert

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548187, 548193, C07D27730

Patent

active

051824027

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, cyans, 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 or 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 --N.sup..sym. R.sup.11 NR.sup.13 R.sup.14 R.sup.20 x.sup..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 agricultrually 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.

REFERENCES:
patent: 3418331 (1968-12-01), Yates et al.
patent: 3694450 (1972-09-01), Wei
patent: 3749787 (1973-07-01), Hepworth et al.
patent: 3787433 (1974-01-01), Wei
patent: 3803161 (1974-04-01), Wei
patent: 3859280 (1975-01-01), Wei
patent: 4243407 (1981-01-01), Cahoy
Polts, Comprehensive Heterocyclic Chemistry 6 p. 256 (1984).
McEvoy et al., J. Med. Chem. 15, 850 (1972).

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