(3a'R,8a'S,8b'S)-3a',5',7'-trimethyl-3a',6',8a',8b'-tetrahydrospiro[cyclopropane-1,4'-indeno[5,4-d][1,3]dioxol]-2'-one                                                                                                                                                              在
                                                                                                                                                                                 
2,3-二氯-5,6-二氰基-1,4-苯醌                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
苯                                                                                  为溶剂,
                                                                                                                                                    反应 20.0h,
                                                                                                                以93%的产率得到(3a'R,8b'S)-3a',5',7'-trimethyl-3a',8b'-dihydrospiro[cyclopropane-1,4'-indeno[5,4-d][1,3]dioxol]-2'-one