3,5-difluoro-3'-(
2H
3)methoxy[1,1'-biphenyl]-4-amine 、
5,5-difluoro-5,6-dihydro-1H-cyclopenta[c]furan-1,3(4H)-dione 以
乙腈 为溶剂,
以35%的产率得到2-{[3,5-difluoro-3'-(
2H
3)methoxy[1,1'-biphenyl]-4-yl]carbamoyl}-4,4-difluorocyclopent-1-ene-1-carboxylic acid