1-(difluoromethyl)-3-(4-fluorophenyl)-1H-pyrazole-4-carboxamide 、
劳森试剂 在
silica gel 、
ethyl acetate n-hexane 、
1-(difluoromethyl)-5-(4-fluorophenyl)-1H-pyrazole-4-carbothioamide 作用下,
以
四氢呋喃 为溶剂,
反应 3.0h,
以to give a mixture (0.840 g, 68%, 1:1.92 mol/mol) of 1-(difluoromethyl)-3-(4-fluorophenyl)-1H-pyrazole-4-carbothioamide and 1-(difluoromethyl)-5-(4-fluorophenyl)-1H-pyrazole-4-carbothioamide as a pale-green powder的产率得到1-(difluoromethyl)-3-(4-fluorophenyl)-1H-pyrazole-4-carbothioamide