tert-butyl {1-[2-(6-nitro-3-oxo-2,3-dihydro-4H-1,4-benzoxazin-4-yl)ethyl]piperidin-4-yl}carbamate 、 1-(2-(4-aminopiperidin-1-yl)ethyl)-2-oxo-1,2-dihydroquinoline-7-carbonitrile 在
trifluoro acetate 、 title compound 作用下,
生成 4-[2-(4-aminopiperidin-1-yl)ethyl]-6-nitro-2H-1,4-benzoxazin-3(4H)-one