4-(1-But-3-ynyl-2,5-dimethyl-cyclopenta-2,4-dienyl)-N-(2-iodo-phenyl)-N-methyl-butyramide                                                                                                                                                              在
                                                                                                                                                                                 
偶氮二异丁腈   、                                                                                                  
三正丁基氢锡                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
苯                                                                                  为溶剂,
                                                                                                                                                                                        以75%的产率得到(3aR,5aR)-3a,5a-Dimethyl-6-methylene-1,2,3,3a,5a,6,7,8-octahydro-cyclopenta[c]pentalene-3-carboxylic acid methyl-phenyl-amide