1-(3-chlorophenyl)-2-ethyl-4-phenyl-3-pyrazolin-5-one 、
3-(三氟甲基)苯肼盐酸盐 、
苯 以
三乙胺 为溶剂,
反应 16.0h,
以to yield 6.5 grams of 4-phenyl-1-(α,α, α-trifluoro-3-tolyl)-3-pyrazolin-5-one having a melting point of about 210°-213° C.的产率得到4-Phenyl-1-(3-trifluormethyl-phenyl)-1.2-dihydro-pyrazol-5-on