Nissan Chemical Industries Limited

Kenichi Shiojima

Tsutomu Nawamaki

Yasuo Kawamura

Eiichi Oya

Kimihiro Ishikawa

Kunimitsu Nakahira

Hiroshi Kita

Yoshitake Tamada

Chiaki Kawaguchi

Hisashi Nakata

Kanji Sawada

Kaoru Itoh, Deceased

The present invention provides a nitrogen-containing cyclic compound represented by the formula (1): ##STR1## wherein R.sup.1 represents an alkyl group; R represents a hydrogen atom or an alkyl group; X represents an oxygen or sulfur atom or NR.sup.3 ; Q.sup.1 represents a hydrogen atom, or an alkyl, cycloalkyl, alkenyl or alkynyl group or a phenyl, naphthyl or heterocyclic group etc.; Q.sup.2 represents an alkyl, cycloalkyl or alkenyl group, or a phenyl or thienyl group etc.; A.sup.1 represents a carbon or nitrogen atom; A.sup.2 represents CR.sup.2 or NR.sup.2, or an oxygen or sulfur atom, or SO or SO.sub.2 ; A.sup.3 represents a single bond, or an oxygen or sulfur atom, or CR.sup.5 or NR.sup.5) and a herbicide comprising the same, which herbicide exhibits very high herbicidal activity at very low application rate and has selectivity against crops.

Pyrimidone isobutyric acid and herbicides containing the same

Nitrogen-containing cyclic compounds and herbicides containing the same

Growing community of inventors

Minamisaitama-gun, Japan

Kenichi Shiojima