Tetrahedron Letters p. 6151 - 6154 (1985)
Update date:2022-08-04
Topics:
Kano, Kunio
Scarpetti, David
Anselme, Jean-Pierre
The treatment of ketal hydrazones of arylglyoxals (2) with 75percent sulfuric acid leads to 3-aroyl-4-phenyl-1-methylpyrazoles (6) as well as 4-phenyl-1-methylpyrazole (7) and the corresponding benzoic acids.Possible mechanisms are discussed.
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