Aminoacetonitrile derivative agricultural and horticultural insecticide containing the same and use thereof

An aminoacetonitrile derivative of the formula (I):

• (wherein Ar1 and Ar2 may be the same or different and each represents a phenyl group;
• a substituted phenyl group having at least one substituent which may be the same or different and selected from the group of
• a halogen atom, a nitro group, a cyano group,
• a C1-C6 alkyl group, a halo C1-C6 alkyl group,
• a C1-C6 alkoxy group, a halo C1-C6 alkoxy group,
• a C2-C6 alkenyl group, a halo C2-C6 alkenyl group,
• a C2-C6 alkynyl group, a C3-C6 cycloalkyl group,
• a C2-C6 alkenyloxy group, a halo C2-C6 alkenyloxy group,
• a C1-C6 alkylthio group, a halo C1-C6 alkylthio group,
• a C1-C6 alkylsulfonyloxy group,
• a halo C1-C6 alkylsulfonyloxy group,
• a C1-C6 alkylsulfinyl group,
• a halo C1-C6 alkylsulfinyl group,
• a C1-C6 alkylsulfonyl group,
• a halo C1-C6 alkylsulfonyl group,
• a C2-C6 alkenylthio group,
• a halo C2-C6 alkenylthio group,
• a C2-C6 alkenylsulfinyl group,
• a halo C2-C6 alkenylsulfinyl group,
• a C2-C6 alkenylsulfonyl group,
• a halo C2-C6 alkenylsulfonyl group,
• a C1-C6 alkylamino group, a di-C1-C6 alkylamino group,
• a C1-C6 alkylsulfonylamino group,
• a halo C1-C6 alkylsulfonylamino group,
• a C1-C6 alkylcarbonyl group,
• a halo C1-C6 alkylcarbonyl group,
• a C1-C6 alkyloxycarbonyl group,
• a phenyl group,
• a substituted phenyl group having at least one substituent which may be the same or different and selected from the group consisting of a halogen atom, a cyano group,
• a nitro group, a C1-C6 alkyl group,
• a halo C1-C6 alkyl group, a C1-C6 alkoxy group,
• a halo C1-C6 alkoxy group, a C1-C6 alkylthio group,
• a halo C1-C6 alkylthio group, a C1-C6 alkylsulfinyl group,
• a halo C1-C6 alkylsulfinyl group,
• a C1-C6 alkylsulfonyl group and
• a halo C1-C6 alkylsulfonyl group,
• a phenyloxy group,
• a substituted phenyloxy group having on the ring thereof at least one substituent which may be the same or different and selected from the group consisting of a halogen atom, a cyano group, a nitro group,
• a C1-C6 alkyl group, a halo C1-C6 alkyl group,
• a C1-C6 alkoxy group, a halo C1-C6 alkoxy group,
• a C1-C6 alkylthio group, a halo C1-C6 alkylthio group,
• a C1-C6 alkylsulfinyl group,
• a halo C1-C6 alkylsulfinyl group,
• a C1-C6 alkylsulfonyl group and
• a halo C1-C6 alkylsulfonyl group,
• a phenylacetylene group, or
• a substituted phenylacetylene group having on the ring thereof at least one substituent which may be the same or different and selected from the group consisting of a halogen atom, a cyano group, a nitro group, a C1-C6 alkyl group,
• a halo C1-C6 alkyl group, a C1-C6 alkoxy group,
• a halo C1-C6 alkoxy group, a C1-C6 alkylthio, group,
• a halo C1-C6 alkylthio group, a C1-C6 alkylsulfinyl group,
• a halo C1-C6 alkylsulfinyl group,
• a C1-C6 alkylsulfonyl group and
• a halo C1-C6 alkylsulfonyl group,
• a pyridyloxy group and
• a substituted pyridyloxy group having on the ring thereof at least one substituent which may be the same or different and selected from the group consisting of a halogen atom, a cyano group, a nitro group, a C1-C6 alkyl group,
• a halo C1-C6 alkyl group, a C1-C6 alkoxy group,
• a halo C1-C6 alkoxy group, a C1-C6 alkylthio group,
• a halo C1-C6 alkylthio group, a C1-C6 alkylsulfinyl group,
• a halo C1-C6 alkylsulfinyl group,
• a C1-C6 alkylsulfonyl group and
• a halo C1-C6 alkylsulfonyl group;
• Q represents a group of
• (wherein R1 and R2 may be the same or different and each represent a hydrogen atom, a halogen atom, a C1-C6 alkyl group, a halo C1-C6 alkyl group, a C1-C6 alkoxy group, a halo C1-C6 alkoxy group, a C3-C6 cycloalkyl group, or a substituted C3-C6 cycloalkyl group having at least one substituent which may be the same or different and selected from the group consisting of a halogen atom and a C1-C6 alkyl group, and R1 and R2 may be bound to represent a C2-C6 alkylene group which may have on its chain at least one substituent selected from the group consisting of a halogen atom, a C1-C6 alkyl group and a C1-C6 alkoxy group), —CH═CH— or —C≡C—;
• d is 0 or an integer of 1;
• R3 represents a hydrogen atom, a C1-C6 alkyl group, a halo C1-C6 alkyl group, a cyano C1-C6 alkyl group, a C1-C6 alkylthio group, a halo C1-C6 alkylthio group, a C2-C6 alkenyl group or a C2-C6 alkynyl group;
• R4, R5, R6, R7 and R8 which may be the same or different and each represents a hydrogen atom, a halogen atom, a C1-C6 alkyl group, a halo C1-C6 alkyl group, a C3-C6 cycloalkyl group, a substituted C3-C6 cycloalkyl group having at least one substituent which may be the same or different and selected from the group consisting of a halogen atom and a C1-C6 alkyl group, a phenyl group or a substituted phenyl group having at least one substituent group which may be the same or different and selected from the group consisting of a halogen atom, a nitro group, a cyano group, a C1-C6 alkyl group, a halo C1-C6 alkyl group, a C1-C6, alkoxy group, a halo C1-C6 alkoxy group, a C1-C6 alkylthio group, a halo C1-C6 alkylthio group, a C1-C6 alkylsulfinyl group, a halo C1-C6 alkylsulfinyl group, a C1-C6 alkylsulfonyl group, a halo C1-C6 alkylsulfonyl group, a C1-C6 alkylamino group and a di-C1-C6 alkylamino group, and R4 and R6 together may form a C1-C6 alkylene group;
• W is —O—, —S—, —SO2,—, or —N(R9)— (wherein R9 is a hydrogen atom or a C1-C6 alkyl group), and
• a and b may be the same or different and a is an integer from 1 to 4 and b is 0 or an integer from 1 to 4)).