3-(4,5-heptadienyl)-4-methyl-2-cyclohexen-1-one                                                                                                                                                                                              以
                                                                                         
环己烷                                                                                  为溶剂,
                                                                                                                                                    反应 1.0h,
                                                                                                                生成                                                 (3aS,4aS,8aR)-4-Eth-(Z)-ylidene-8-methyl-octahydro-cyclopenta[1,4]cyclobuta[1,2]benzen-5-one   、                                                                                             (3aS,4aS,8aR)-4-Eth-(E)-ylidene-8-methyl-octahydro-cyclopenta[1,4]cyclobuta[1,2]benzen-5-one