Korea Research Institute of Chemical Technology

Eung K Ryu

Jae N Kim

Hyoung Rae Kim

Jong Hwan Song

Kyoung Mahn Kim

Jin Seo Kim

Kyoung Min Kim

Dong Ju Jeon

Kwang Yun Cho

Kyung Sik Hong

Kun Hoe Chung

Jin Seog Kim

Jung No Lee

Won H Lee

The present invention relates to 2-(5-isoxazolinylmethyloxyphenyl)-4,5,6,7-tetrahydro-2H-indazole derivatives of formula 1, their preparation method and their use as herbicides. As the compounds have excellent herbicidal activity against paddy weeds comprising ECHOR, SCPJU, MOOVA, CYPSE and SAGPY, and better selectivity, the compounds of the present invention are typically useful as herbicides for control of paddy weeds in conditions with seeded rice and transferred rice.

Herbicidal 2-(5-isoxazolinyl methyloxyphenyl)-4,5,6,7-tetrahydro -2H-indazole derivatives

The present invention relates to novel cyclohexane-1-3-dione derivatives of formula (1) useful as herbicides and plant-growth regulants, ##STR1## wherein X is selected from the group consisting of hydrogen, halogen, C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkoxy, C.sub.1 -C.sub.6 haloalkyl, nitro, C.sub.1 -C.sub.6 alkylthio, C.sub.1 -C.sub.6 alkylsulfinyl, C.sub.1 -C.sub.6 alkylsulfonyl, C.sub.1 -C.sub.6 sulfamoyl, and N, N-di(C.sub.1 -C.sub.6 alkyl)sulfamoyl group; (X)n represents the number of X substituents which may be substituted on benzene ring, wherein n is 1, 2 or 3. Also, cyclohexyl moiety, one of the substituents on benzofuran ring, is substituted at C-4, C-5, C-6 or C-7 position on benzene ring; R.sup.1 is selected from the group consisting of hydrogen and C.sub.1 -C.sub.6 alkyl group; R.sup.2 is selected from the group consisting of C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl and C.sub.2 -C.sub.6 alkynyl group; R.sup.3 is selected from the group consisting of hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 haloalkyl, C.sub.2 -C.sub.6 alkenyl, C.sub.2 -C.sub.6 haloalkenyl, C.sub.2 -C.sub.6 alkoxyalkyl, C.sub.2 -C.sub.6 alkylthioalkyl, benzyl and C.sub.2 -C.sub.6 haloalkanoyl group; R.sup.4 is selected from the group consisting of hydrogen, alkali metal cation, alkaline earth metal cation, C.sub.1 -C.sub.4 alkanoyl, C.sub.1 -C.sub.4 haloalkanoyl and benzoyl group.

Herbicidal cyclohexane-1,3-dione derivatives and their preparation

The present invention relates to novel quinolinyloxadiazole derivatives of the following formula (I) having processes for their preparation and their use as herbicides and plant growth regulants, especially their use in the selective kill and control of barnyardgrass in the presence of rice. ##STR1## wherein, A and B are selected from the group consisting of hydrogen, halogen and C.sub.1 -C.sub.3 lower alkyl;

Herbicidal quinolinyloxadiazoles

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Daejeon, South Korea

Eung K Ryu