ethyl 1-(3-cyano-4-fluorophenyl)-5-[(2'-methylsulfonyl-3-fluoro-[1,1']-biphen-4-yl)aminocarbonyl]pyrazole-4-carboxylate 、
丙酮肟 在
potassium tert-butylate 作用下,
以
四氢呋喃 、 DMF (N,N-dimethyl-formamide) 为溶剂,
反应 18.0h,
以65%的产率得到ethyl 1-(4-isopropylideneaminooxy-3-cyariophenyl)-5-[(2'-methylsulfonyl-3-fluoro-[1,1']-biphen-4-yl)aminocarbonyl]pyrazole-4-carboxylate