N-<4-(difluoromethoxy)phenyl>-4-(4-fluorophenyl)-N-<(1S,4R)-4,7,7-trimethyl-3-oxo-2-oxabicyclo<2.2.1>hept-1-ylcarbonyl>-3-<4-(2,2,2-trifluoroethoxy)phenyl>-4,5-dihydropyrazole-1-carboxamide 在
1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下,
以
乙醚 为溶剂,
反应 240.0h,
以74%的产率得到(4S)-N-<4-(difluoromethoxy)phenyl>-4-(4-fluorophenyl)-N-<(1S,4R)-4,7,7-trimethyl-3-oxo-2-oxabicyclo<2.2.1>hept-1-ylcarbonyl>-3-<4-(2,2,2-trifluoroethoxy)phenyl>-4,5-dihydropyrazole-1-carboxamide