rac-(1R,2S,3S,3aR,4S)-1,2,3,3a,4-pentamethyl-10-methylene-2,3,3a,4,5,9b-hexahydro-1H-1,4-methanocyclopenta[a]naphthalene 在
pyridinium chlorochromate 作用下,
以
二氯甲烷 为溶剂,
反应 3.5h,
以88%的产率得到rac-(1R,2S,3aS,4R)-1,2,3a,4-tetramethyl-1,2,3a,4,5,9b-hexahydro-3H-1,4-methanocyclopenta[a]naphthalene-3,10-dione