((R)-2,2-dimethyl[1,3]dioxolan-4-ylmethyl)hydrazine                                                                                                                                                              在
                                                                                                                                                                                 palladium diacetate   、                                                                                                  
caesium carbonate   、                                                                                                  tri tert-butylphosphoniumtetrafluoroborate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇   、                                                                                         
甲苯                                                                                  为溶剂,
                                                                                                                                                    反应 6.42h,
                                                                                                                生成                                                 2-[N'-tert-butoxycarbonyl-N'-((R)-2,2-dimethyl[1,3]dioxolan-4-ylmethyl)hydrazino]-3-(2',4',5'-trifluorobiphenyl-4-yloxymethyl)benzoic acid methyl ester