(4aS)-1,4aβ-dimethyl-4,4a,7,8-tetrahydronaphthalene-2,5(3H,6H)-dione-5-ethyeneacetal 在
palladium on activated charcoal
吡啶 、
sodium methylate 作用下,
以
甲醇 为溶剂,
65.0 ℃
、2.1 MPa
条件下,
反应 74.0h,
以82%的产率得到(1'S,4'aS,8'aR)-1',4'a-dimethylspiro[1,3-dioxolane-2,5'-3,4,6,7,8,8a-hexahydro-1H-naphthalene]-2'-one