3-[(2-Phenyl-1,3-dioxolan-2-yl)methylsulfanyl]prop-2-ynal   、                                                                                      
Methyl chloro[2-(4-nitrophenyl)hydrazinylidene]acetate                                                                                                                                                              在
                                                                                                                                                                                 silver carbonate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
1,4-二氧六环                                                                                  为溶剂,
                                                                                                                                                    反应 18.0h,
                                                                                                                以60 mg的产率得到methyl 4-formyl-1-(4-nitrophenyl)-5-[(2-phenyl-1,3-dioxolan-2-yl)-methylthio]-1H-pyrazole-3-carboxylate