Evaluation of DPPH Radical Scavenging Activity of 2-(Furan-2'-yl)-3-hydroxy-4H-chromen-4-one and Their Derivatives
作者:Ranbir Kaur、Kulvir Kaur、Manisha Bansal
DOI:10.14233/ajchem.2016.19809
日期:——
The 2-(furan-2-yl)-3-hydroxy-4H-chromen-4-one and their substituted derivatives with electron donating and electron withdrawing groups have been synthesized. Free radical scavenging activity has been studied using 2,2-diphenyl-1-picrylhydrazine (DPPH). The kinetic studies and co-relation of excited state intramolecular proton transfer (ESIPT) with electron donating and electron withdrawing group explains the effect of these groups on percentage scavenging activity.
Quinone photochemistry. A general synthesis of acylhydroquinones
作者:George A. Kraus、Masayuki Kirihara
DOI:10.1021/jo00037a058
日期:1992.5
Hemasri; Jaya Prakash Rao; Rajanna, Journal of the Indian Chemical Society, 2013, vol. 90, # 8, p. 1115 - 1125
作者:Hemasri、Jaya Prakash Rao、Rajanna、Saiprakash
DOI:——
日期:——
Electromeric effect of substitution at 6 th position in 2-(Furan-2-yl)-3-hydroxy-4 H-chromen-4-one (FHC) on the absorption and emission spectra
作者:MANISHA BANSAL、RANBIR KAUR
DOI:10.1007/s12039-015-0786-1
日期:2015.3
the electromeric effects of substitution at 2nd and 6th positions on the 2–3 double bond in ‘C’ ring are similar but the effect on the double bond of 4-carbonyl group is opposite. It has been found that the substitution at 2nd position changes mainly the electron density directly at the 4-carbonyl group and substitution at 6th position changes the electron density of the ‘C’ ring, changing the overall