Mitsubishi Petrochemical Company Limited

Daicel Chemical Industries, Ltd.

Mitsuru Hikido

Keiji Endo

Kazuhiko Konno

Takeshi Hamatani

Atsushi Goh

Kaoru Ikeda

Norio Sasaki

Yoshihiro Usui

Kiyoshi Sugaya

Keiichi Hayashizaki

Hirokazu Hasebe

Chiharu Yasumoto

Atsushi Go

Kumiko Tamura

Kazuo Jikihara

Mami Nakamura

Kouichi Araki

1,3-oxazin-4-one derivatives, herbicides containing the same, and novel

A 1,3,5-triazine derivative represented by the following formula (I) ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4, independently from each other, represent a hydrogen atom or a group selected from the class consisting of linear or branched C.sub.1 -C.sub.6 alkyl groups, C.sub.2 -C.sub.6 alkenyl groups, C.sub.2 -C.sub.6 alkynyl groups, C.sub.1 -C.sub.6 alkyl groups substituted by C.sub.1 -C.sub.6 alkoxy or alkylthio, C.sub.3 -C.sub.6 cycloalkyl groups, a phenyl group unsubstituted or substituted by a substituent selected from halogen, nitro, cyano, lower alkyl, lower alkoxy, lower alkylthio and fluoro-substituted lower alkyl, C.sub.7 -C.sub.9 aralkyl groups unsubstituted or substituted by a substituent selected from halogen, nitro, cyano, lower alkyl, lower alkoxy, lower alkylthio and fluoro-substituted lower alkyl, and alkoxycarbonylmethyl groups having 1 to 6 carbon atoms in the alkoxy moiety; and Y represents a fluoro-substituted C.sub.1 -C.sub.3 alkyl group and a herbicidal use thereof.

Triazine derivatives, herbicidal composition containing them, and method

An acetanilide derivative of the following formula (I) and a herbicide containing one or more of the acetanilide derivative as the active ingredient are described. ##STR1## In the formula, R.sup.1 is a lower alkyl group; R.sup.2 is a fluorine-substituted lower alkyl group; A is ##STR2## B is an optionally substituted pyrazolyl group, an optionally substituted alkoxy group or a hydrogen atom. The acetanilide derivative and the herbicide have a selective weed killing activity to gramiveous weeds.

Herbicidal 2-chloro-2'-fluoroalkoxyacetanilides

2-Chloro-N-(4,6-dimethoxy-5-pyrimidinyl)-N-[1-(1-pyrazolyl)ethyl]acetamide of the following formula: ##STR1## a herbicidal composition comprising a herbicidally effective amount of the compound of formula (I); and a method of controlling weeds which comprises applying a herbicidally effective amount of the formula (I) to the locus where the weeds are growing or will grow.

2-chloro-N-(4,6-dimethoxy-5-pyrimidinyl)-N-[1,(1-py

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Ami, Japan

Mitsuru Hikido