93675-52-6Relevant articles and documents
An SiO2/ZnBr2 mediated expeditious approach to 3-methyl-1-phenyl-1H-pyrazol-5(4H)-one derivatives in water under microwave irradiation
Parveen, Mehtab,Azaz, Shaista,Malla, Ali Mohammed,Ahmad, Faheem,Ahmad, Musheer,Gupta, Mayank
, p. 148 - 162 (2016/01/09)
A new one-pot three-component green approach has been developed for the synthesis of a series of pyrazolone derivatives 2(a-s) from differently substituted aromatic aldehydes, ethylacetoacetate and phenylhydrazine/2,4-dinitrophenylhydrazine in excellent y
Synthesis, electronic spectra, and solvatochromic behaviour of 4-arylidene-1-(2,4-dinitrophenyl)-3-methyl-2-pyrazoline-5-ones
Ibrahim, Said A.,Youssef, M. S. K.
, p. 2841 - 2844 (2007/10/02)
The uv-visible electronic spectra of 4-arylidene-1-(2,4-dinitrophenyl)-3-methyl-2-pyrazoline-5-ones have been studied.The different bands observed have been assigned to the proper electronic transition.Solvatochromic behaviour of these compounds is investigated by studying their visible spectra in organic solvents of different polarities.The longer wavelength band displayed by para-hydroxy derivative is assigned to an intermolecular CT transition.The solvated H-bond complexes formed between ethanol or DMF and the para-hydroxy derivative are investigated.Transition moment (μCTL), ΔG, and Kf values of these complexes have been determined.
