Aryl sulfide comprising benzylamine, synthesis method and application thereof

An aryl sulfide of formula I, or an agriculturally acceptable salt thereof,

• wherein:
• n is 0 or 1;
• X is fluorine, chlorine, or methyl;
• Y is chlorine or methyl;
• R1 is hydrogen, fluorine, chlorine, bromine, hydroxyl, nitro, hydroxymethyl, a cyano group, trifluoromethyl, C1-3 alkyl, C1-4 alkoxycarbonyl, acetyl, propionyl, C1-3 alkoxy, ethylthio, 2-fluoroethanothioxy, 2-chloroethanothioxy, 2,2-difluoroethylthio, 2,2,2-trifluoroethylthio, propylthio, 2,2,2-trifluoroethylsulfinyl, vinyloxycarbonyl, 2,2,2-trifluoroethoxycarbonyl, or n-methylcarbonyl;
• R2 is hydrogen, fluorine, or chlorine;
• R3 is hydrogen, fluorine, chlorine, bromine, or a cyano group;
• R4 and R5 at each occurrence represent hydrogen;
• and
• R6 is n-propyl or 2,2,2-trifluoroethyl.