2-methyl-4-(2-methylsulfanyl-ethyl)-4H-oxazol-5-one   、                                                                                      
2-(4-pyridylmethylene)-5-bromo-3(2H)-benzofuranone                                                                                                                                                              在
                                                                                                                                                                                 
silver(I) acetate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        以70%的产率得到(5-bromo-2-hydroxyphenyl)-[5-methyl-2-(2-methylsulfanylethyl)-4-pyridin-4-yl-1H-pyrrol-3-yl]methanone