(E)-3-(furan-3-yl)prop-2-enoyl fluoride 、 在
planar-(-)-H-pyrrolidino-pyridine derivative 作用下,
以
二氯甲烷 为溶剂,
反应 22.0h,
生成
(3R,3aS,8aS)-3-furan-3-yl-3a-methyl-8-methylene-3,4a,8,8a-tetrahydro-2H-cyclopenta[a]inden-1-one 、 (3S,3aR,8aR)-3-furan-3-yl-3a-methyl-8-methylene-3,4a,8,8a-tetrahydro-2H-cyclopenta[a]inden-1-one 、 3-furan-3-yl-3a-methyl-8-methylene-3,4a,8,8a-tetrahydro-2H-cyclopenta[a]inden-1-one