An object of the present invention is to provide a method for producing an oxazole compound in a high yield.The object can be achieved by a compound represented by Formula (11): wherein R1 is a hydrogen atom or lower-alkyl group; R2 is a 1-piperidyl group substituted at the 4-position with a substituent selected from (A1a) a phenoxy group substituted on the phenyl moiety with one or more halogen-substituted lower-alkoxy groups, (A1b) a phenoxy-substituted lower-alkyl group substituted on the phenyl moiety with one or more halogen-substituted lower-alkyl groups, (A1c) a phenyl-substituted lower-alkoxy lower-alkyl group substituted on the phenyl moiety with halogen, (A1d) a phenyl-substituted lower-alkyl group substituted on the phenyl moiety with one or more halogen-substituted lower-alkoxy groups, (A1e) an amino group substituted with a phenyl group substituted with one or more halogen-substituted lower-alkoxy groups, and a lower-alkyl group, and (A1f) a phenyl-substituted lower-alkoxy group substituted on the phenyl moiety with one or more halogen-substituted lower-alkoxy groups; n is an integer from 1 to 6; and X3 is an organic sulfonyloxy group.