By using 2,3-epoxypropan-l-ones and arylamine,boron trifluoride acetic acid complex/acetyla-cetone-promoted in situ ring opening-aryl migration reaction at 80 ℃ was developed in 1,4-dioxane,syn-thesizing a series of N-aryl enaminones in good yields.The structures of all products were characterized by 1 H NMR,HRMS and IR spectra.In addition,the structure of compound 3 was further confirmed by sin-gle-crystal X-ray diffraction analysis.
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