1-溴-2-戊炔

2-(2-戊炔-1-基)-2-环戊烯-1-酮

dimethyl 2-(3-oxo-2-pent-2-enylcyclopentyl)propanedioate

prop-2-enyl 2-oxo-1-pent-2-ynylcyclopentane-1-carboxylate

2-[(Z)-2-戊烯基]环戊烯-1-酮