6-{2-[2-hydroxy-5-(trifluoromethyl)phenyl]-1-cyclopenten-1-yl}-2-pyrazinecarboxylic acid 、
2,4-二氯溴苄 在
potassium carbonate 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 3.0h,
以74%的产率得到(2,4-dichlorophenyl)methyl 6-{2-[2-{[(2,4-dichlorophenyl)methyl]oxy}-5-(trifluoromethyl)phenyl]-1-cyclopenten-1-yl}-2-pyridinecarboxylate