methyl 5-[3-(benzyloxy)-4-chlorophenyl]-6-oxo-1,6-dihydropyridine-3-carboxylate   、                                                                                      
三氟甲磺酸酐                                                                                                                                                                                                                                                                                                          以obtain 1.6 g of methyl 5-[3-(benzyloxy)-4-chlorophenyl]-6-{[(trifluoromethyl)sulphonyl]oxy}nicotinate in the form of oil的产率得到methyl 5-[3-(benzyloxy)-4-chlorophenyl]-6-{[(trifluoromethyl)sulphonyl]oxy}nicotinate