Isoxazoline derivative containing trifluoromethane as well as preparation method and application of isoxazoline derivative

The invention relates to a trifluoromethane-containing isoxazoline derivative as well as a preparation method and application thereof, and belongs to the technical field of pesticide chemistry. The chemical structural formula of the trifluoromethane-containing isoxazoline derivative is as shown in a general formula I, in the general formula I, R1a, R1b and R1c independently represent any one of a hydrogen atom and a halogen atom, and the halogen atom represents any one of a chlorine atom and a fluorine atom; a represents any one of pyrrolyl and B, and B represents any one of phenyl, pyridyl and thiazolyl; r2 represents any one of a hydrogen atom and a methyl group; and R3 is any one selected from the group consisting of-CH2C (O) NHCH2CF3,-OCH3,-CH2COOCH3 and 6-chloropyrimidyl. The formula (I) is shown in the description. The invention also relates to a preparation method of the isoxazoline derivative containing trifluoromethane. The invention also applies the trifluoromethane-containing isoxazoline derivative