1,2,4-oxadiazole derivatives, and selective herbicidal compositi

Details 1,2,4-oxadiazole derivatives, and selective herbicidal compositi 1,2,4-oxadiazole derivatives, and selective herbicidal compositi

1987-05-12

1988-06-28

Fan, Jane T.

Chemistry: fertilizers

Processes and products

Forms or conditioning

546277, 548131, C07D41312, A01N 4382

Patent

active

047536713

ABSTRACT:
1,2,4-oxadiazole derivatives having selective herbicidal action in controlling broad leaf weeds and cyperaceous weeds without causing phytotoxicity to geraminous crop plants having the formula: ##STR1## wherein A is a methine group or a nitrogen atom; R.sub.1 is a chlorine atom or a methyl group; when A is a methine group, R.sub.2 is a hydrogen atom if R.sub.1 is a methyl group, and a hydrogen atom or a methyl group if R.sub.1 is a chlorine atom, and when A is a nitrogen atom, R.sub.2 is a hydrogen atom; R.sub.3 is a hydrogen atom, an alkyl group having from 1 to 11 carbon atoms, a benzyl group unsubstituted or substituted by chlorine or methoxy; a phenoxymethyl group unsubstituted or substituted by chlorine or methyl, or a lower alkoxyalkyl group.

REFERENCES:
patent: 3954442 (1976-05-01), Becker et al.
patent: 4238626 (1980-12-01), Nahm et al.
patent: 4391995 (1983-07-01), Nahm et al.
Science, vol. 103, No. 2677, 19 Apr. 1946, pp. 472-473, Van Overbeek et al., "Use of 2,4-Dichlorophenoxyacetic Acid as a Selective Herbicide in the Tropics".
Chemical Abstracts, vol. 98, No. 23, 6 Jun. 1983, p. 657, Abstract No. 198238y.
Becker et al., CA 99:105236d.
Roechling et al., CA 81-49647c.

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