methyl 2-methyl-2-phenyl-1-(thiophene-2-carbonyl)cyclopropanecarboxylate                                                                                                                                                              在
                                                                                                                                                                                 indium(III) triflate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 4.5h,
                                                                                                                生成                                                 methyl 4-methyl-7-oxo-4-phenyl-4,5,6,7-tetrahydrobenzo[b]thiophene-6-carboxylate   、                                                                                             methyl 4-methyl-7-oxo-4-phenyl-4,5,6,7-tetrahydrobenzo[b]thiophene-6-carboxylate