Regioselective synthesis of 1-methyl-3-hydroxy-5-perfluoroalkylpyrazoles by the addition of methylhydrazine to perfluoroalkylacetylenic esters

The tautomerism of heteroaromatic compounds with five-membered rings—IV

Alan R. Katritzky, F.W. Maine · Tetrahedron · 1964 · 119 citations

Heterocyclic, Heteroaromatic Compounds, Organic Chemistry +2

Direct synthesis of .beta.-ketomethylenetriphenylphosphoranes from readily available phosphonium salts

Bruce C. Hamper · The Journal of Organic Chemistry · 1988 · 56 citations

Donut Icon, Altmetric Attention Score, Organic Chemistry +8

General methods for the substitution of 5- chloropyrazoles. Synthesis of 1,3-dialkyl-5-chloropyrazol-4-yl aryl ketones and new 1,3-dialkyl-2-pyrazolin-5-ones

Donald E. Butler, Horace A. DeWald · The Journal of Organic Chemistry · 1971 · 33 citations

Diversity Oriented Synthesis, Donut Icon, Natural Sciences +11

Investigations in Heterocycles. IX. Resonance Effects in Pyrazolin-5-ones and Related Compounds

George deStevens, Angela Halamandaris, Patricia Wenk et al. · Journal of the American Chemical Society · 1959 · 22 citations

Resonance Effects, Derivative (Chemistry), Heterocyclic +12

Studies on Acetylenic Compounds. LVI. Syntheses of 4-Isoxazolin-3-ones and 1-Phenyl-3-hydroxypyrazoles

Norio Nakamura, Yukichi Kishida, Noboru Ishida · Chemical and Pharmaceutical Bulletin · 1971 · 11 citations · Full text

α-Acetylenic Esters, Strong Bases, 2-Substituted 4-Isoxazolin-3-ones +11