36755-40-5Relevant articles and documents
A diversity-oriented approach to 1H-pyrazole-4,5-diols, 4-hydroxy-3H-pyrazol-3-ones, and phenylhydrazones from key intermediate 4-acetyloxy-3H-pyrazol-3-one
Masumoto, Eiichi,Okabe, Fumi,Fujioka, Toshihiro,Yamagata, Kenji,Maruoka, Hiroshi
, p. 2572 - 2587 (2014)
An approach to 1H-pyrazole-4,5-diols 4a-d, 4-hydroxy-3H-pyrazol-3-ones 5a-d, and phenylhydrazones 6a-d from key intermediate 4-acetyloxy-3Hpyrazol-3-one 3a is described. 4-Alkylidene-3H-pyrazol-3-ones 1a-c were reacted with m-chloroperbenzoic acid in the
Diastereodivergent and enantioselective access to spiroepoxides via organocatalytic epoxidation of unsaturated pyrazolones
Meninno, Sara,Roselli, Angelo,Capobianco, Amedeo,Overgaard, Jacob,Lattanzi, Alessandra
supporting information, p. 5030 - 5033 (2017/11/06)
Readily available chiral amine-thioureas are effective catalysts for the first diastereo- and enantioselective epoxidation of unsaturated pyrazolones. The trans- or cis-spiroepoxides are preferentially obtained in good yield and high to excellent enantios
Synthesis and reactions of 4-isopropylidene-1-aryl-3-methyl-2-pyrazolin-5-ones
DeRuiter,Carter,Arledge,Sullivan
, p. 149 - 153 (2007/10/02)
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