Nihon Nohyaku Co., Ltd.

Masahiro Uehara

Masayuki Kimura

Masanori Yoshida

Kenji Tsubata

Shinsuke Fujioka

Kazuyuki Sakata

Masayuki Morimoto

Hiroki Kodama

Toshiaki Shimizu

Osamu Sanpei

Nobuyuki Niino

Masamitsu Watanabe

A process for producing a substituted aminoquinazolinone derivative of formula (I), characterized by reducing a substituted iminoquinazolinone derivative of formula (II) with hydrogen in the presence of a catalyst and either of a halogen compound and a sulfur compound; a substituted iminoquinazolinone derivative of formula (II'); and a pest control agent containing the derivative of formula (II&#x2032;) or a salt thereof as an active ingredient and a method of using the same (in the formulae, R represents hydrogen, formyl, (C-C) alkyl, (C-C)alkoxy(C-C)alkyl, (C-C) alkylsulfonyl, optionally substituted phenylcarbonyl, etc.; Rrepresents an optionally substituted, 5- or 6-membered heterocycle having one to three heteroatoms selected among oxygen, sulfur, and nitrogen; Rrepresents hydrogen or (C-C) alkyl; X and X&#x2032; may be the same or different and each represents (C-C) haloalkyl, (C-C) haloalkoxy, etc.; n is an integer of 0; and n&#x2032; is an integer of 1-4).  

Process for producing substituted aminoquinazolinone derivative, intermediate therefor, and pest control agent

The present invention relates to substituted aminoquinazolinone (thione) derivatives or salts thereof, intermediates thereof for preparing the same, pest controller compositions and methods for using the same, where in particular, the compounds of the present invention, having the substituents in the phenyl group which belongs to the quinazolinone ring, possess superior insecticidal effects at low dosage and more particularly, the novel aminoquinazolinone derivatives having bromine atom, iodine atom, perfluoroalkyl group, perfluoroalkoxy group or the like in the quinazoline ring possess excellent insecticidal activities.

Substituted aminoquinazolinone (thione) derivatives or salts thereof, intermediates thereof, and pest controllers and a method for using the same

There are disclosed a compound represented by the general formula (I): ##STR1## (wherein R, R.sup.1, X, Y and n are as defined in the specification), a pest controller containing said compound as an active ingredient, a pest control method using said controller, and an intermediate for producing the compound of the above general formula (I).

Substituted aminoquinazolinone (thione) derivatives or salts thereof,

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Kawachinagano, Japan

Masahiro Uehara