1,3-bis-((4bR,8S,8aS)-2-isopropyl-8-methoxycarbonyl-4b,8-dimethyl-4b,5,6,7,8,8a,9,10-octahydrophenanthren-3-yl)-4,5-dihydro-3H-imidazol-1-ium chloride 在
ammonium tetrafluoroborate 作用下,
以
乙腈 为溶剂,
以67%的产率得到1,3-bis-((4bR,8S,8aS)-2-isopropyl-8-methoxycarbonyl-4b,8-dimethyl-4b,5,6,7,8,8a,9,10-octahydrophenanthren-3-yl)-4,5-dihydro-3H-imidazol-1-ium tetrafluoroborate