(S)-cyclobutyl(3-fluorophenyl)methylamine hydrochloride   、                                                                                      
4-chloro-2-methyl-6-oxo-1-propyl-1,6-dihydro-pyridine-3-carboxylic acid                                                                                                                                                              在
                                                                                                                                                                                 
N,N-二异丙基乙胺   、                                                                                                  
Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-)                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
N,N-二甲基甲酰胺                                                                                  为溶剂,
                                                                                                                                                    反应 2.0h,
                                                                                                                以78%的产率得到4-chloro-2-methyl-6-oxo-1-propyl-1,6-dihydro-pyridine-3-carboxylic acid [(S)-cyclobutyl-(3-fluoro-phenyl)-methyl]-amide