3-环戊烯-1-醇

1-hepta-1,6-dien-4-ylpyrimidine-2,4-dione

4-iodohepta-1,6-diene

diethyl 2-hepta-1,6-dien-4-ylpropanedioate

diethyl 2-(1,5-dioxopentan-3-yl)propanedioate