(E)-5-(2-(3-hydroxyprop-1-enyl)phenethyl)-2,2-dimethyl-1,3-dioxane-4,6-dione 在
cyclopentadienylruthenium(II) trisacetonitrile hexafluorophosphate 、
(3aR,11aR,14aS,16bS)-2,2,13,13-tetra-isopropyl-3a,11a,14a,16b-tetrahydro-bis(1,3-dioxolano[4',5':3,4]pyrrolo)[1,2-a:1',2'-a]naphtho[1,2-d:8,7-d']diimidazole 、
对甲苯磺酸 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以97%的产率得到(-)-2,2-dimethyl-1'-vinyl-3',4'-dihydro-1'H-spiro[[1,3]dioxane-5,2'-naphthalene]-4,6-dione