ethyl 2-(3,4-dichlorophenoxy)-4,4,4-trifluoro-3-oxobutanoate 、
ethyl 1-carbamimidoylpiperidine-4-carboxylate acetate 在
potassium carbonate 作用下,
以
1,4-二氧六环 为溶剂,
反应 18.0h,
以9%的产率得到ethyl 1-[5-(3,4-dichlorobenzyl)-6-oxo-4-(trifluoromethyl)-1,6-dihydropyrimidin-2-yl]piperidine-4-carboxylate