4-羟基双环[2.2.2]辛烷-1-羧酸

三甲基硅烷化重氮甲烷

methyl 4-acetoxybicyclo[2.2.2]octane-1-carboxylate

ethyl 1-acetyl-4-oxocyclohexane-1-carboxylate

4-乙酰基-4-乙氧基羰基庚二酸