37703-60-9Relevant academic research and scientific papers
Cooperative intramolecular interaction of diazacrown ether bearing β-diketone fragments on an ionic liquid extraction system
Shimojo, Kojiro,Okamura, Hiroyuki,Hirayama, Naoki,Umetani, Shigeo,Imura, Hisanori,Naganawa, Hirochika
, p. 4850 - 4852 (2009)
A novel extractant β-diketone-substituted diaza-18-crown-6 demonstrated very efficient extraction of Sr2+ due to an intramolecular synergistic effect on the ionic liquid extraction system and recovery of Sr2+ from the ionic liquid was successfully achieved under acidic conditions. The Royal Society of Chemistry 2009.
A novel diastereoselective synthesis of 6-aryl-5-hydroxy-2,3- dihydropyrano[2,3-c]pyrazol-4(1H)-ones
Bondock, Samir
, p. 127 - 131 (2014)
A novel one-pot diastereoselective synthesis of trans-6-aryl-5-hydroxy-2,3- dihydro[2,3-c]pyrazol-4(1H)-ones 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h is described via the Darzens condensation reaction of 2-chloro-1-(5-hydroxy-3-methyl-1-phenyl- 1H-pyrazol-4-yl)ethanone (2) with different aromatic aldehydes in aqueous basic medium. The structures of the compounds prepared were determined by analytical and spectral analyses.
Synthesis and NMR-Spectroscopic Investigations with 4-Chloroacyl-1-phenylpyrazolin-5-ones
Eller, Gernot A.,Holzer, Wolfgang
, p. 132 - 137 (2018)
The synthesis of various 4-acylpyrazolones bearing in the acyl moiety either a terminal chloro-substituent or a terminal ortho-chlorophenyl group was achieved by reaction of 3-methyl-1-phenyl-2-pyrazolin-5-one (tautomer to 3-methyl-1-phenyl-1H-pyrazol-5-ol) with the corresponding acid chloride using calcium hydroxide / 1,4-dioxane. In one case (reaction with chlorobutanoyl chloride) a spontaneous cyclization occurred leading to the corresponding oxepino[2,3-c]pyrazole. Detailed NMR spectroscopic investigations with all prepared compounds were performed.
