Herbicidal compositions and pyrazole derivatives

Details Herbicidal compositions and pyrazole derivatives Herbicidal compositions and pyrazole derivatives

1980-03-20

1981-11-17

Hollrah, Glennon H.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

71 92, C07D23120

Patent

active

043012930

ABSTRACT:
Herbicidal compositions containing as an active ingredient one or more of the pyrazole compounds having the formula ##STR1## (wherein R.sub.1 represents hydrogen atom or a lower alkyl group, R.sub.2 represents a lower alkyl group or a lower alkenyl group, X represents a halogen atom, nitro group, a lower alkyl group, a halogenated lower alkyl group, a lower alkoxy group, a lower alkanesulfonyl group, cyano group, a lower alkylthio group or an aliphatic acyl group and n is an integer of 1 to 4 and when n is 2, 3 or 4, X's may be the same or different), salts thereof and organic acid esters thereof, as well as new pyrazole compounds having herbicidal activities and the formula ##STR2## (wherein R.sub.1 represents hydrogen atom or a lower alkyl group, R.sub.2 represents a lower alkyl group or a lower alkenyl group Z represents a halogen atom, nitro group, a lower alkyl group, a halogenated lower alkyl group, a lower alkoxy group, a lower alkanesulfonyl group, cyano group, a lower alkylthio group, an aliphatic acyl group or benzoyl group, n is an integer of 1 to 4, when n is 2,3 or 4, Z's may be the same or different and Y represents oxygen atom or sulfur atom; provided that those wherein R.sub.1 and R.sub.2 are methyl groups, Z is chlorine atom at 2-position, n is 1 and Y is oxygen atom and wherein R.sub.1 and R.sub.2 are methyl groups, Z is nitro group at 4-position, n is 1 and Y is oxygen atom are excluded. These pyrazole compounds are prepared in a conventional manner.

REFERENCES:
patent: 2476986 (1949-07-01), Martin
patent: 2694703 (1954-11-01), Graham
patent: 4008249 (1977-02-01), Fischer et al.
patent: 4025530 (1977-05-01), Crovetti et al.
patent: 4063925 (1977-12-01), Konotsune et al.
patent: 4146726 (1979-03-01), Konotsune et al.

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