methyl 5-chloro-6-(trifluoromethyl)pyrazine-2-carboxylate   、                                                                                      
三甲基环三硼氧烷   、                                                                                      
potassium carbonate                                                                                                                                                              在
                                                                                                                                         
四(三苯基膦)钯                                                                                                                                                                                                                               氩   、                                                                                                  crude compound   、                                                                                                  silica gel   、                                                                                                  
methyl 5-methyl-6-(trifluoromethyl)pyrazine-2-carboxylate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
1,4-二氧六环                                                                                  为溶剂,
                                                                                                                                                    反应 24.25h,
                                                                                                                以to obtain the title compound methyl 5-methyl-6-(trifluoromethyl)pyrazine-2-carboxylate (1.25 g, 58% yield) as a colorless liquid的产率得到methyl 5-methyl-6-(trifluoromethyl)pyrazine-2-carboxylate