tert-butyl {1-[(2E)-3-(2,5-difluorophenyl)prop-2-en-1-yl]piperidin-4-yl}carbamate 、 1-[2-(4-aminopiperidin-1-yl)ethyl]-7-methoxy-1,4-dihydro-2H-3,1-benzoxazin-2-one trifluoroacetate 以The crude trifluoro acetate of the title compound was obtained as an oil, 430 mg (quantitative)的产率得到