6-(8-amino-1-bromoimidazo[1,5-a]pyrazin-3-yl)-2,2-dimethylhexahydroindolizin-3(2H)-one 在
1-chloromethyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate) 作用下,
以
乙腈 为溶剂,
生成 (6R,8aS)-6-(8-amino-1-bromo-5-fluoro-6-methoxy-5,6-dihydroimidazo[1,5-a]pyrazin-3-yl)-2,2-dimethylhexahydroindolizin-3(2H)-one