Ube Industries, Inc.

Seiji Takamura

Mitsuaki Takenaka

Tetsuo Takematsu

Minoru Nishimura

Masanori Watanabe

Yasutomo Takeuchi

Hakobu Sekioka

Akio Matsushita

Yasuhisa Fukuda

Shigeki Nagai

Tatsuo Okada

Yasutomo Yakeuchi

Masazumi Sakata

Yosio Kawaguchi

Yoshio Kawaguchi

Hiroshi Hase

There are disclosed a 3,4-dihydro-2H-1,4-benzoxazine derivatives represented by the formula: ##STR1## wherein X represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, a halogen atom, a trifluoromethyl group, a phenoxy group, or a halogen-substituted phenoxy group; n is 0, 1, 2 or 3; Y represents an oxygen atom or a sulfur atom; and R.sub.1 and R.sub.2 each represent a hydrogen atom or an alkyl group having 1 to 5 carbon atom, provided that the case where both of R.sub.1 and R.sub.2 are hydrogen atoms is excluded, and a herbicidal composition containing the same as an active ingredient, useful for combatting weeds.

Benzoxazine compounds useful as herbicides

There are disclosed N-benzyl-2-(4-fluoro-3-trifluoromethylphenoxy)butanoic amide represented by the formula: ##STR1## and a herbidical composition containing the same as an active ingredient.

N-benzyl-2-(4-fluoro-3-trifluoromethylphenoxy)butanoic amide and

There are disclosed a herbicidal composition containing, as an active ingredient, a phenoxyalkylamide derivative represented by the formula ##STR1## wherein X, n, Y, Z, R.sup.1, R.sup.2 and R.sup.3 have the same meanings as defined in the specification, and a method for controlling weeds by the use of the same. The herbicidal composition according to this invention shows a superior weed-killing activity by pre- and post-emergence treatment in soil.

Herbicidal composition containing a phenoxyalkylamide derivative and

A pirimidinyloxyalkanamide derivative of Formula 1: ##STR1## wherein R.sub.1 represents a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkylthio group, a lower alkenylthio group, a lower alkynylthio group, a halogenated lower alkenylthio group, a cycloalkylthio group, an aroxyalkylthio group, a lower alkoxyl group, an amino group, a methanesulfonyl group, a trifluoromethyl group, an anilino group which may be substituted with a halogen atom or a benzylthio group which may be substituted with a halogen atom; R.sub.2 represents a hydrogen atom, a halogen atom, a lower alkyl group, a trifluoromethyl group, an amino group, a lower alkoxy group or a lower alkylthio group; R.sub.3 represents an ethyl group or an n-propyl group; and R.sub.4 represents a cyclohexyl group, a thienyl group, a pyridyl group, a furyl group or a ##STR2## group wherein X and Y may be the same or different and each represent a hydrogen atom, a lower alkyl group, a trifluoromethyl group, a lower alkoxyl group or a halogen atom, and a herbicide composition comprising the same as an active ingredient.

Pyrimidinyloxyalkanamide derivatives and herbicide composition

There are presented new diphenyl ether derivatives having a substituent selected from a halogen atom, a trifluoromethyl group and a methoxy group at the 4-position in one phenyl moiety, having optionally also halo-substituents at the 2- and 6-positions, and having a nitro group at the 4'-position and a substituent selected from an unsubstituted or substituted (1,3-dioxorane-4-yl)methoxy group, an unsubstituted or substituted (1,3-dioxa-5-cyclohexyloxy) group and an alkyl- or (substituted)amino-sulfonyloxy group at the 3'-position in the other phenyl moiety. They exhibit improved herbicidal effects on various weeds without any adverse phytotoxic effect on crops, e.g. rice seedlings.

Diphenyl ether derivatives, process for preparing the same and

New diphenyl ether derivatives having one to three substituents selected from a halogen atom and a trifluoromethyl group at any optional one to three positions of the 2'-, 3'-, 4'-, 5'- and 6'-positions in one phenyl moiety and nitro group at the 4-position and unsubstituted or substituted aminosulfonyl group at the 3-position in another phenyl moiety. They have a superior herbicidal effect and can be prepared starting from a known 3-benzylmercapto compound through three steps.

Growing community of inventors

Ube, Japan

Seiji Takamura