Herbicidal method of using 5-pyrazolones

Details Herbicidal method of using 5-pyrazolones Herbicidal method of using 5-pyrazolones

1987-09-11

1989-02-28

Lee, Mary C.

Chemistry: fertilizers

Processes and products

Forms or conditioning

71 90, 544298, 544300, 544310, 544316, 544317, 544322, 544324, 544327, 544328, 544331, 546279, 548182, 548183, 548184, 548195, 548365, 548367, A01N 4356

Patent

active

048082104

ABSTRACT:
A 5-pyrazolone of the formula ##STR1## wherein R is selected from the group consisting of mono- and polycyclic aromatic of 6 to 14 carbon atoms, heterocyclic optionally substituted with phenyl, ##STR2## and benzyl, all optionally substituted with at least one member of the group consisting of fluorine, chlorine, bromine, --CF.sub.3, optionally unsaturated alkyl of 1 to 8 carbon atoms and the radical OZ in which Z is an optionally unsaturated alkyl of 1 to 8 carbon atoms or an acyl of a carboxylic acid of 1 to 6 carbon atoms, A is selected from the group consisting of halogen, --CF.sub.3 and --CN, B and C are individually selected from the group consisting of hydrogen, halogen, --OH, --OR' and R' is optionally unsaturated alkyl of 1 to 8 carbon atoms, acyl of 1 to 6 carbon atoms, alkyl sulfonyl of 1 to 8 carbon atoms, aryl sulfonyl of 6 to 18 carbon atoms and benzyl optionally substituted with a member of the group consisting of fluorine, chlorine, bromine, --CF.sub.3, optionally unsaturated alkyl of 1 to 8 carbon atoms, optionally unsaturated alkyl and haloalkyl of 1 to 8 carbon atoms interrupted with at least one heteroatom, with the proviso that B and C can not both be fluorine or --OH having herbicidial activity.

REFERENCES:
patent: 4081596 (1978-03-01), Moller et al.
patent: 4256902 (1981-03-01), Boschi et al.

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