potassium carbonate 、 3-Chloro-6-ethyl-5-methyl-pyrazine-2-carbonitrile 、
3-Chloro-5-ethyl-6-methyl-pyrazine-2-carbonitrile 、
N-苯基哌嗪 、 在
二氯甲烷 、
magnesium sulfate 、 silica gel 、
正己烷 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 16.0h,
以giving 0.067 g (0.218 mmol, 21.8% of theory) of the 5′-ethyl-6′-methyl-4-phenyl-3,4,5,6-tetrahydro-2H-[1,2′]bipyrazinyl-3′-carbonitrile as orange oil的产率得到5'-ethyl-6'-methyl-4-phenyl-3,4,5,6-tetrahydro-2H-[1,2']bipyrazinyl-3'-carbonitrile