Isoxazolin-5-one derivative and herbicide containing same as active ingredient

An isoxazolin-5-one derivative represented by the following formula (1) below:

• wherein in the formula (1),
• R1 represents a C1-C6 haloalkyl group;
• R2 represents a hydrogen atom, a C1-C6 alkyl group, a C1-C6 haloalkyl group, a C2-C6 alkenyl group, a C2-C6 alkynyl group, a C1-C6 alkoxy C1-C6 alkyl group, a C1-C6 haloalkoxy C1-C6 alkyl group, a C1-C6 alkoxy C1-C6 alkoxy C1-C6 alkyl group, a C1-C6 alkylthio C1-C6 alkyl group, a C1-C6 alkylcarbonyl C1-C6 alkyl group, a C7-C11 aralkyl group which may be monosubstituted or polysubstituted with a halogen atom, a C1-C6 alkyl group or a C1-C6 alkoxy group, a phenoxy C1-C6 alkyl group, a C7-C11 aralkyloxy C1-C6 alkyl group, a phenylcarbonyl C1-C6 alkyl group, a C1-C6 alkylcarbonyl group, a C1-C6 haloalkylcarbonyl group, a C2-C6 alkenylcarbonyl group, a C2-C6 alkynylcarbonyl group, a C3-C6 cycloalkylcarbonyl group, a C3-C6 cycloalkyl C1-C6 alkylcarbonyl group, a C1-C6 alkoxy C1-C6 alkylcarbonyl group, a C1-C6 haloalkoxy C1-C6 alkylcarbonyl group, a C1-C6 alkoxy C1-C6 alkoxy C1-C6 alkylcarbonyl group, a C1-C6 alkylthio C1-C6 alkylcarbonyl group, a C1-C6 haloalkylthio C1-C6 alkylcarbonyl group, a benzoyl group which may be monosubstituted or polysubstituted with a halogen atom or a C1-C6 alkyl group, a C7-C11 aralkylcarbonyl group which may be monosubstituted or polysubstituted with a halogen atom or a C1-C6 alkyl group, a heterocyclic carbonyl group which may be monosubstituted or polysubstituted with a halogen atom or a C1-C6 alkyl group, a heterocyclic C1-C6 alkylcarbonyl group which may be monosubstituted or polysubstituted with a halogen atom or a C1-C6 alkyl group, a C1-C6 alkoxycarbonyl group, a C1-C6 haloalkoxycarbonyl group, a C2-C6 alkenyloxycarbonyl group, a C2-C6 alkynyloxycarbonyl group, a C3-C6 cycloalkyloxycarbonyl group, a C3-C6 cycloalkyl C1-C6 alkoxycarbonyl group, a C1-C6 alkoxy C1-C6 alkoxycarbonyl group, a C1-C6 haloalkoxy C1-C6 alkoxycarbonyl group, a C1-C6 alkoxy C1-C6 alkoxy C1-C6 alkoxycarbonyl group, a C1-C6 alkylthio C1-C6 alkoxycarbonyl group, a C1-C6 haloalkylthio C1-C6 alkoxycarbonyl group, a phenoxycarbonyl group which may be monosubstituted or polysubstituted with a halogen atom or a C1-C6 alkyl group, a C7-C11 aralkyloxycarbonyl group which may be monosubstituted or polysubstituted with a halogen atom or a C1-C6 alkyl group, a phenoxy C1-C6 alkoxycarbonyl group which may be monosubstituted or polysubstituted with a halogen atom or a C1-C6 alkyl group, a heterocyclic oxycarbonyl group which may be monosubstituted or polysubstituted with a halogen atom or a C1-C6 alkyl group, a heterocyclic C1-C6 alkoxycarbonyl group which may be monosubstituted or polysubstituted with a halogen atom or a C1-C6 alkyl group, a C1-C6 alkylthiocarbonyl group, a C1-C6 haloalkylthiocarbonyl group, a C1-C6 alkylaminocarbonyl group, a C1-C6 haloalkylaminocarbonyl group, a di-C1-C6 alkylaminocarbonyl group wherein the di-C1-C6 alkyl groups may be same or different, a C1-C6 alkylsulfonyl group, a C1-C6 haloalkylsulfonyl group, a C2-C6 alkenylsulfonyl group, a C2-C6 alkynylsulfonyl group, a C3-C6 cycloalkylsulfonyl group, a C3-C6 cycloalkyl C1-C6 alkylsulfonyl group, a C1-C6 alkoxy C1-C6 alkylsulfonyl group, a phenylsulfonyl group which may be monosubstituted or polysubstituted with a halogen atom or a C1-C6 alkyl group, a C7-C11 aralkylsulfonyl group which may be monosubstituted or polysubstituted with a halogen atom or a C1-C6 alkyl group, a C1-C6 alkylaminosulfonyl group or a di-C1-C6 alkylaminosulfonyl group wherein the di-C1-C6 alkyl groups may be same or different;
• R3 represents a hydrogen atom, a halogen atom, a C1-C6 alkyl group, a C1-C6 haloalkyl group, a C3-C6 cycloalkyl group, a phenyl group which may be monosubstituted or polysubstituted with a halogen atom or a C1-C6 alkyl group, an amino group, a C1-C6 alkylamino group or a di-C1-C6 alkylamino group wherein the di-C1-C6 alkyl groups may be same or different;
• R4 represents a hydrogen atom, a C1-C15 alkyl group, a C1-C15 haloalkyl group, a C2-C6 alkenyl group, a C2-C6 haloalkenyl group, a C2-C6 alkynyl group, a C2-C6 haloalkynyl group, a C3-C6 cycloalkyl group, a C3-C6 cycloalkyl C1-C6 alkyl group, a C1-C6 alkoxy C1-C6 alkyl group, a C1-C6 haloalkoxy C1-C6 alkyl group, a C1-C6 alkoxy C1-C6 alkoxy C1-C6 alkyl group, a C1-C6 alkylthio C1-C6 alkyl group, a C1-C6 haloalkylthio C1-C6 alkyl group, a C1-C6 alkylsulfinyl C1-C6 alkyl group, a C1-C6 alkylsulfonyl C1-C6 alkyl group, a C1-C6 alkylamino C1-C6 alkyl group, a di-C1-C6 alkylamino C1-C6 alkyl group wherein the di-C1-C6 alkyl groups may be same or different, a C1-C6 alkylcarbonyl C1-C6 alkyl group, a phenyl group which may be monosubstituted or polysubstituted with a halogen atom, a C1-C6 alkyl group or a C1-C6 alkoxy group, a C7-C11 aralkyl group which may be monosubstituted or polysubstituted with a halogen atom, cyano, nitro, a C1-C6 alkyl group, a C1-C6 haloalkyl group, a C1-C6 alkoxy group, a C1-C6 haloalkoxy group, a C1-C6 alkylthio group or a C1-C6 haloalkylthio group, an indanyl group which may be monosubstituted or polysubstituted with a halogen atom, a C1-C6 alkyl group or a C1-C6 alkoxy group, a tetrahydronaphthyl group which may be monosubstituted or polysubstituted with a halogen atom, a C1-C6 alkyl group or a C1-C6 alkoxy group, a heterocyclic C1-C6 alkyl group which may be monosubstituted or polysubstituted with a halogen atom, a C1-C6 alkyl group or a C1-C6 alkoxy group, a phenoxy C1-C6 alkyl group which may be monosubstituted or polysubstituted with a halogen atom, a C1-C6 alkyl group or a C1-C6 alkoxy group, a C7-C11 aralkyloxy C1-C6 alkyl group which may be monosubstituted or polysubstituted with a halogen atom, a C1-C6 alkyl group or a C1-C6 alkoxy group, a phenylcarbonyl C1-C6 alkyl group which may be monosubstituted or polysubstituted with a halogen atom, a C1-C6 alkyl group or a C1-C6 alkoxy group, a C1-C6 alkylcarbonyl group, a benzoyl group which may be monosubstituted or polysubstituted with a halogen atom, a C1-C6 alkyl group or a C1-C6 alkoxy group, a C7-C11 aralkylcarbonyl group which may be monosubstituted or polysubstituted with a halogen atom, a C1-C6 alkyl group or a C1-C6 alkoxy group, a C1-C6 alkoxycarbonyl group, a C1-C6 alkylaminocarbonyl group, a di-C1-C6 alkylaminocarbonyl group wherein the di-C1-C6 alkyl groups may be same or different, a C1-C6 alkylsulfonyl group, a C1-C6 haloalkylsulfonyl group, a phenylsulfonyl group which may be monosubstituted or polysubstituted with a halogen atom, a C1-C6 alkyl group or a C1-C6 alkoxy group or a C7-C11 aralkylsulfonyl group which may be monosubstituted or polysubstituted with a halogen atom, a C1-C6 alkyl group or a C1-C6 alkoxy group;
• X represents a hydrogen atom, a halogen atom, a C1-C6 alkyl group or a C1-C6 alkoxy group;
• and
• n represents an integer of 1 to 4, wherein X's may be different from each other when n represents an integer of 2 to 4.