(2R)-2-ethyl-4-chloro-6-trifluoromethyl-3,4-dihydro-2H-quinoline-1-carboxylic acid iso-propyl ester   、                                                                                      
benzhydrylidene-(3,5-bis-trifluoromethyl-benzyl)-amine                                                                                                                                                              在
                                                                                                                                                                                 
sodium hexamethyldisilazane                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃   、                                                                                         
N,N-二甲基甲酰胺                                                                                  为溶剂,
                                                                                                                                                    反应 0.33h,
                                                                                                                生成                                                 (2R,4R,4aS)-4-[(benzhydrylidene-amino)-(3,5-bis-trifluoromethyl-phenyl)-methyl]-2-ethyl-6-trifluoromethyl-3,4-dihydro-2H-quinoline-1-carboxylic acid isopropyl ester   、                                                                                             (2R,4R,4aR)-4-[(benzhydrylidene-amino)-(3,5-bis-trifluoromethyl-phenyl)-methyl]-2-ethyl-6-trifluoromethyl-3,4-dihydro-2H-quinoline-1-carboxylic acid isopropyl ester