Sumitomo Chemical Company, Limited

Susumu Takemura

Eiki Nagano

Masayuki Enomoto

Masaharu Sakaki

Satoru Kizawa

Ryo Sato

Toru Uekawa

Minoru Takano

Kazuo Saito

Shinsuke Shojima

Masaharu Sakai

There are disclosed novel pyrimidone derivatives of the formula I: ##STR1## wherein X is hydrogen, chlorine, methyl or ethyl, R.sup.2 is hydrogen or methyl, and Q is ##STR2## A is fluorine, chlorine or bromine; and R.sup.1 is alkyl, alkenyl, alkynyl, alkoxyalkyl or haloalkyl. Also disclosed are a herbicidal composition containing a herbicidally effective amount of the compound (I) as an active ingredient and a method for exterminating undesired weeds by applying a herbicidally effective amount of the compound (I) to an area where the undesired weeds grow or will grow.

Pyrimidone derivatives and their use

There are disclosed novel dihydrobenzofuran derivatives of the formula: ##STR1## wherein X, Y, Z and R.sup.2 are each as defined in the description. Also disclosed are a herbicidal composition containing a herbicidally effective amount of the compound (I) as an active ingredient and a method for exterminating unfavorable weeds by applying a herbicidally effective amount of the compound (I) to an area where the unfavorable weeds grow or will grow.

Dihydrobenzofuran derivatives, their production and use

There are disclosed novel dihydrobenzofuran derivatives of the formula: ##STR1## wherein A, X, Y, Z, R.sup.1 and R.sup.2 are each as defined in the description. Also disclosed are a herbicidal composition containing a herbicidally effective amount of the compound (I) as an active ingredient and a method for exterminating unfavorable weeds by applying a herbicidally effective amount of the compound (I) to an area where the unfavorable weeds grow or will grow.

There are disclosed novel benzofuran derivatives of the formula: ##STR1## Also disclosed are a herbicidal composition containing the above benzofuran derivative as an active ingredient and a method for exterminating undesired weeds by the application of a herbicidally effective amount of the above benzofuran derivative to an area where the undesired weeds grow or will grow.

Benbzofuran derivatives and their use as herbicides

There is disclosed a 1-phenyl-4 trifluoromethyl-uracil derivative of the general formula: ##STR1## wherein R.sup.1 is hydrogen or methyl, and R.sup.2 is C.sub.1 -C.sub.7 alkyl or C.sub.3 -C.sub.7 cycloalkyl optionally substituted with C.sub.1 -C.sub.3 alkyl. Also disclosed are a herbicidal composition containing this derivative as an active ingredient and a method for exterminating undesired weeds by application of this herbicidal composition.

Uracil derivatives and their use

A compound of the formula: ##STR1## wherein R is lower alkyl, lower alkenyl, lower alkynyl, lower alkoxy(lower)alkyl, halo(lower)alkyl or halo(lower) alkenyl, X is chlorine or bromine, and Y is methyl optionally substituted with halogen, which is useful as an active ingredient of herbicides.

Amino uracil derivatives, and their production and use

There are disclosed novel arylindazole derivatives of the formula: ##STR1## and agrochemically acceptable salts thereof. Also disclosed are a herbicidal composition including the above arylindazole derivative as an active ingredient and a method for exterminating undesired weeds by the application of a herbicidally effective amount of the above arylindazole derivative to an area where the undesired weeds grow or will grow.

Arylindazole derivatives and their use

Pyridone derivatives of the formula: ##STR1## wherein R is an alkyl group, an alkenyl group, an alkynyl group, a haloalkyl group, a haloalkenyl group or an alkoxyalkyl group, X is a hydrogen atom, a halogen atom, a methyl group optionally substituted with mono or poly halogen atoms or an ethyl group optionally substituted with mono or poly halogen atoms and Y is a hydrogen atom or a methyl group. Said compounds show a high herbicidal potency against undesired weeds.

Pyridone derivatives and use

A compound of the formula: ##STR1## wherein R is a lower alkyl group, A is a hydrogen atom, a fluorine atom or a chlorine atom, X is an oxygen atom or a sulfur atom, Y is a hydrogen atom, a fluorine atom, a chlorine atom or a bromine atom and Z is a methyl group or an amino group, which is useful as a herbicide.

Growing community of inventors

Takarazuka, Japan

Susumu Takemura