Pyridine compounds which have useful insecticidal utility

Abstract

The present invention relates to a compound having the formula below which has an excellent inseciticidal activity: ##STR1## wherein R.sub.1 represents an optionally substituted 5-6 membered aromatic hetero ring containing nitrogen atom, except a non-substituted 2-pyridyl; x represents an optionally substituted C.sub.1-3 alkylene R.sub.2 represents a hydrogen, a carbamoyl, a mono or di C.sub.1-5 alkyl carbamoyl, a thiocarbamoyl, a mono or di C.sub.1-5 alkylthiocarbamoyl, a sulfamoyl, a mono or di C.sub.1-5 alkylsulfamoyl, an optionally substituted C.sub.1-5 alkyl, an optionally substituted C.sub.2-5 alkenyl, an optionally substituted C.sub.2-5 alkynyl, an optionally substituted C.sub.3-8 cycloalkyl, an optionally substituted C.sub.3-8 cycloalkenyl, an optionally substituted aryl or --Y--R.sub.5 ; Y represents O, S(O).sub.n, CO, CS or CO.sub.2 ; n represents 0, 1 or 2; R.sub.5 represents a hydrogen, an optionally substituted C.sub.1-5 alkyl, an optionally substituted C.sub.2-5 alkenyl, an optionally substituted C.sub.2-5 alkynyl, an optionally substituted C.sub.3-8 cycloalkyl, an optionally substituted C.sub.3-8 cycloalkenyl or an optionally substituted aryl; R.sub.3 represents a hydrogen, an optionally substituted C.sub.1-5 alkyl, an optionally substituted C.sub.2-5 alkenyl, an optionally substituted C.sub.2-5 alkynyl, an optionally substituted C.sub.3-8 cycloalkyl or an optionally substituted C.sub.3-8 cycloalkenyl; R.sub.4 represents a cyano or a nitro; and Z represents CH or N; or its salt.

Dependencies are inferred from the claim text.