methyl 3-acetylbicyclo[2.2.1]hepta-2,5-diene-2-carboxylate

exo-2-Hydroxybicyclo[2.2.1]heptan-3-yl-endo-1-ethanon

环戊二烯

exo-2-Benzyloxybicyclo[2.2.1]hept-5-en-3-yl-endo-1-ethanon

α-chloronorbornene