1-(1-环己烯基)哌啶

tert-butyl 2-(2-bromo(1-piperidin-1-yl)cyclohexenyl)acetate

(2-oxo-cyclohexyl)-malonic acid

ethyl 1-(2-ethoxy-2-oxoethyl)-2-oxocyclohexane-1-carboxylate

(2-氧代环己基)-乙酸甲酯