(+/-)-2-(benzyloxycarbonyl)-6-ethyl-7-exo-chloro-2-azabicyclo<2.2.2>oct-5-ene-7-endo-carboxylic acid methyl ester 在
氢溴酸 作用下,
反应 0.5h,
以99.56%的产率得到(+/-)-6-ethyl-7-exo-chloro-2-azabicyclo<2.2.2>oct-5-ene-7-endo-carboxylic acid methyl ester hydrogen bromide salt