methyl 1-[2-(diphenylamino)-2-oxoethyl]-2-oxo-1,2-dihydropyridine-3-carboxylate   、                                                                                      
sodium hydroxide                                                                                                                                                                                              以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                                                        以to provide 90 mg 1-[2-(diphenylamino)-2-oxoethyl]-2-oxo-1,2-dihydropyridine-3-carboxylic acid的产率得到1-[2-(diphenylamino)-2-oxoethyl]-2-oxo-1,2-dihydropyridine-3-carboxylic acid