1,2,2,6,6-五甲基-4-氨基哌啶 、
4-[2-(4-bromo-1-oxo-1,3-dihydro-2-benzofuran-5-yl)ethyl]piperidinium chloride 以4-[(Z)-2-(4-bromo-1-oxo-1,3-dihydro-2-benzofuran-5-yl)ethenyl]piperidinium chloride which was obtained as INTERMEDIATES 35 and 36的产率得到4-[(Z)-2-(4-bromo-1-oxo-1,3-dihydro-2-benzofuran-5-yl)ethenyl]piperidinium chloride