6-(2-chloro-pyridin-3-yl)-5-methyl-3-oxo-4-(3-trifluoromethyl-phenyl)-3,4-dihydro-pyrazine-2-carboxylic acid methyl ester 、
4-(tributylstannyl)benzonitrile 在
二(三叔丁基膦)钯 作用下,
以
N-甲基吡咯烷酮 为溶剂,
反应 0.17h,
以73%的产率得到6-[2-(4-cyano-phenyl)-pyridin-3-yl]-5-methyl-3-oxo-4-(3-trifluoromethyl-phenyl)-3,4-dihydro-pyrazine-2-carboxylic acid methyl ester