肉桂醛 、
3-but-2-ynyloxy-penta-1,4-dienen 在
chloro(1,5-cyclooctadiene)rhodium(I) dimer
(±)-2,2 '-二(二-对甲苯基膦)-1,1 '-联萘 作用下,
以
甲苯 为溶剂,
反应 2.0h,
生成 (3S,3aS)-6-methyl-3-vinyl-3a,4-dihydro-1H,3H-cyclopenta[c]furan-5-one 、 (3R,3aS)-6-methyl-3-vinyl-3a,4-dihydro-1H,3H-cyclopenta[c]furan-5-one 、 (3S,3aR)-6-methyl-3-vinyl-3a,4-dihydro-1H,3H-cyclopenta[c]furan-5-one 、 (3R,3aR)-6-methyl-3-vinyl-3a,4-dihydro-1H,3H-cyclopenta[c]furan-5-one