Oxo-[2-(2-phenethyl-4-phenyl-butyryl)-pyrrolidin-1-yl]-acetic acid methyl ester   、                                                                                      magnesium,2-methylbutane,chloride                                                                                                                                                              在
                                                                                                                                                                                 ammonium chloride                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        以0.14 g (76.5%)的产率得到3,3-Dimethyl-1-[2-(2-phenethyl-4-phenyl-butyryl)-pyrrolidin-1-yl]-pentane-1,2-dione