Sumitomo Chemical Company, Limited

Mitsunori Hiratsuka

Naonori Hirata

Hideyuki Shibata

Kazuo Saitoh

Kazuo Saito

Kenji Arai

Toru Uekawa

Masao Shiroshita

Susumu Ohtsuka

Hiroyuki Yogai

Masayuki Enomoto

Satoru Kizawa

Minoru Takano

There is disclosed a compound of the formula: ##STR1## wherein X is hydrogen or halogen; Y is halogen; Z is oxygen or sulfur; R.sup.1 is hydrogen or alkyl; and R.sup.2 is a group of the formula: ##STR2## wherein R.sup.3 and R.sup.4 are the same or different, and each is hydrogen, alkyl, cycloalkyl or benzyl, or the ends of R.sup.3 and R.sup.4 are connected together to be alkylene; or R.sup.2 is a group of the formula: ##STR3## wherein R.sup.5 and R.sup.6 are the same or different, and each is hydrogen or alkyl, or the ends of R.sup.5 and R.sup.6 are connected together to be alkylene, with the proviso that R.sup.2 is a group of the formula: ##STR4## when Z is oxygen, which is useful as a herbicide.

Tetrahydrophthalimide derivatives and their use as herbicides

A pyrimidine herbicide derivative having the formula, ##STR1## wherein A is C.sub.3 -C.sub.6 oxacycloalkyl, C.sub.3 -C.sub.6 oxacycloalkyl substituted with at least one member selected from the group consisting of C.sub.1 -C.sub.6 alkyl and halogen, C.sub.2 -C.sub.6 oxacycloalkyl C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 oxacycloalkyl C.sub.1 -C.sub.6 alkyl substituted with at least one member selected from the group consisting of C.sub.1 -C.sub.6 alkyl and halogen, C.sub.3 -C.sub.5 dioxacycloalykyl, C.sub.3 -C.sub.5 dioxacycloalkyl substituted with at least one member selected from the group consisting of C.sub.1 -C.sub.6 alkyl and halogen, C.sub.3 -C.sub.5 dioxacycloalkyl C.sub.1 -C.sub.6 alkyl or C.sub.3 -C.sub.5 dioxacycloalkyl C.sub.1 -C.sub.6 alkyl substituted with at least one member selected from the group consisting of C.sub.1 -C.sub.6 alkyl and halogen;

Pyrimidine derivatives

Novel biphenyl derivatives represented by the formula (I) ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, X.sup.1, X.sup.2, X.sup.3 and Y are as defined hereinafter.

Biphenyl derivatives and their use as herbicides

The present invention relates to novel N-acyldihydroquinoline derivatives, a method for producing the same and their use as herbicides.

N-acyldihydroquinoline derivatives, a method for producing the same and

Herbicidal pyrimidine compound having the formula ##STR1## wherein the substitutents A, R.sup.1, R.sup.2, X, Y.sup.1, Y.sup.2, Y.sup.3 and Z are as herein below defined.

Herbicidal pyrimidine compounds, compositions containing the same and

Herbicidal pyrimidine compound having the formula ##STR1## wherein the substitutents A, R.sup.1, R.sup.2, X, Y.sup.1, Y.sup.2, Y.sup.3 and Z are as defined herein below.

The present invention relates to a pyrimidine derivative having the formula ##STR1## (wherein the variables are defined in the full text of the patent), a method for producing the same, and its use as a herbicide.

Pyrimidine derivative

A herbicidal pyrimidine derivative having the formula, ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, Y.sub.1, Y.sub.2, Y.sub.3, X and Z are defined as in the specification.

A pyrimidine derivative represented by the formula ##STR1## wherein the variables are defined below in the specification, and their production and herbicidal activities are described.

Compounds of the present invention are represented by the formula, ##STR1## wherein X represents a lower alkyl, lower alkoxy, lower haloalkyl or lower haloalkoxy group or a halogen atom, and R.sup.1 and R.sup.2, which may be the same or different, represent a hydrogen atom or a methyl group. They are useful intermediates for preparing herbicidal compounds.

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Toyonaka, Japan

Mitsunori Hiratsuka