| 摘要 |
A process for producing a substituted aminoquinazolinone derivative represented by the formula (I), characterized by reducing a substituted iminoquinazolinone derivative represented by the formula (II) with hydrogen in the presence of a catalyst and either of a halogen compound and a sulfur compound; a substituted iminoquinazolinone derivative represented by the formula (II'), which is an intermediate in the production process; and a pest control agent containing the derivative of the formula (II') or a salt thereof as an active ingredient and a method of using the same (in the formulae, R represents hydrogen, formyl, (C<SUB>1</SUB>-C<SUB>6</SUB>) alkyl, (C<SUB>1</SUB>-C<SUB>6</SUB>)alkoxy(C<SUB>1</SUB>-C<SUB>3</SUB>)alkyl, (C<SUB>1</SUB>-C<SUB>6</SUB>) alkylsulfonyl, optionally substituted phenylcarbonyl, etc.; R<SUP>1 </SUP>represents an optionally substituted, 5- or 6-membered heterocycle having one to three heteroatoms selected among oxygen, sulfur, and nitrogen; R<SUP>2 </SUP>represents hydrogen or (C<SUB>1</SUB>-C<SUB>3</SUB>) alkyl; X and X' may be the same or different and each represents (C<SUB>1</SUB>-C<SUB>6</SUB>) haloalkyl, (C<SUB>1</SUB>-C<SUB>6</SUB>) haloalkoxy, etc.; n is an integer of 0 to 4; and n' is an integer of 1 to 4).
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