Nissan Chemical Industries Limited

Tosihiko Oguti

Takasi Ikai

Kenzi Makino

Gozyo Sakata

Yasuo Kawamura

Toshiaki Sato

Yasukazu Ura

Yuzi Kawamura

Tsutomu Nawamaki

Susumu Yamamoto

Fumio Suzuki

Takuya Kakuta

Tatsuo Numata

Yoshihiro Iwasawa

Kazuya Kusano

Quinoxaline derivatives having the formula I

Quinoxaline derivatives and herbicidal composition

Quinoxaline derivatives having the formula I ##STR1## wherein X represents a halogen atom; R represents ##STR2## --CH.dbd.CH--COOR.sup.2 (R.sup.2 represents a C.sub.1 -C.sub.4 alkyl group); --CN or --CH.sub.2 OH, and R.sup.1 represents ##STR3## --S--R.sup.3 (R.sup.3 represents a C.sub.1 -C.sub.4 alkyl or alkenyl group or phenyl or chlorophenyl group), --NH--R.sup.4 (R.sup.4 represents a C.sub.1 -C.sub.4 alkoxy carbonylalkyl group, hydroxy alkyl group, phenyl group; C.sub.1 -C.sub.4 alkoxy alkyl group or di C.sub.1 -C.sub.4 alkyl amino group), are remarkably effective as selective herbicides.

Disclosed is a novel pyrazolesulfonylurea derivative represented by the formula (I), preparation thereof, a herbicide containing said derivative as an active ingredient and a herbicidal method by use thereof. ##STR1## (wherein A, B, C, D, X, Y and Z are as defined in the specification).

Pyrazolesulfonylurea derivatives, preparation thereof, herbicide

The present invention provides novel compounds which are intermediates in the production of the compounds of the formula (I). These novel intermediates have the following general formula ##STR1## wherein Z is NH.sub.2 or chlorine, R.sup.1 is chlorine or bromine and R.sup.2 is methyl or ethyl.

Pyrazolesulfonylurea amides and chlorides

There are disclosed a compound formula (I): ##STR1## wherein R.sup.1 represents a chlorine atom or a bromine atom; R.sup.2 represents methyl or ethyl; and X represents methyl or methoxy; a herbicidal composition containing the same as an active ingredient; and a method of use of the compound represented by formula (I) for controlling the growth of weeds without harm to crop plants in the same location.

Pyrazolesulfonylurea useful for controlling the growth of undesired

A herbicidal composition which comprises an adjuvant and an active ingredient of heterocyclic ether type phenoxy fatty acid derivative having the formula ##STR1## wherein A represents --CH-- or --N--; X represents a halogen atom; n is 0, 1 or 2; R.sup.1 represents a hydrogen atom; a lower alkyl group; R.sup.2 represents --OH; --O-alkyl group; --OM group (M is an inorganic or organic salt moiety); ##STR2## --O-lower alkenyl group; --O-benzyl group; --O-lower alkylalkoxy group; --O-phenyl; --O-cyclohexyl, --O-halogenoalkyl, --O-lower alkynyl and --O-cyanoalkyl; R.sup.3 and R.sup.4 respectively represent a hydrogen atom or a lower alkyl group.

Heterocyclic ether type phenoxy fatty acid derivatives and herbicidal

1-Phenylethyl sulfone derivatives substituted by a halogenated alkyloxy group is represented by the general formula ##STR1## where R is an alkyl group substituted by a halogen atom, n is 1 or 2, each of P and Q is a hydrogen atom or a lower alkyl group and each of X and Y is a hydrogen atom, a lower alkyl group or a halogen atom. The compounds are effective as a herbicide. Also disclosed is a process for their preparation.

Growing community of inventors

Shiraoka-machi, Japan

Tosihiko Oguti