ethyl 2-acetyl-6-(hydroxymethyl)-2-(prop-2-ynyl)hept-6-en-4-ynoate                                                                                                                                                              在
                                                                                                                                                                                 silver hexafluoroantimonate   、                                                                                                  
[(tert-butylamino)(diethylamino)methylidene]gold(I) chloride                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 1.0h,
                                                                                                                以64%的产率得到ethyl 2-acetyl-5-hydroxy-6-methyl-2,3-dihydro-1H-indene-2-carboxylate