Trifluoroacetyl derivatives of N,N-dimethylhydrazine, urea, and thiourea. Reaction of hexafluoroacetylacetone with N,N-dimethylhydrazine

Recent advances in the synthesis of fluorinated hydrazones

“…41 Kinds of triuoromethyl hydrazones or triuoromethyl pyrazoles as the condensation intermediators were synthesised between 1982 and 1991. [42][43][44][45][46][47] In 2005, triuoromethylpyrazoles were prepared successfully by Lahm's group by reacting a suitable 1,3-diketone with substituted hydrazine using AcOH as solvent. 48 A similar work was developed by Fustero and coworkers in 2008 (Scheme 17).…”

“… 41 Kinds of trifluoromethyl hydrazones or trifluoromethyl pyrazoles as the condensation intermediators were synthesised between 1982 and 1991. 42–47 …”