کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
66149 | 48417 | 2012 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Substituent effect in photocatalytic oxidation of 2-oxo-1,2,3,4-tetrahydropyrimidines using TiO2 nanoparticles Substituent effect in photocatalytic oxidation of 2-oxo-1,2,3,4-tetrahydropyrimidines using TiO2 nanoparticles](/preview/png/66149.png)
The semiconductor-sensitized oxidation of various 1-, 4- and 5-substituted 2-oxo-1,2,3,4-tetrahydropyrimidines was carried out in acetonitrile using TiO2 anatase nanoparticles. The aims of this study were to elucidate the effects of the nature of the substituents on the 1-, 4- and 5-positions of the heterocyclic ring, the type of the photocatalyst and the nature of solvent on the rate of reaction. The proposed electron-transfer mechanism is supported by the experimental results and also by the computational studies.
Figure optionsDownload high-quality image (102 K)Download as PowerPoint slideHighlights
► Photooxidation of 2-oxo-1,2,3,4-tetrahydropyrimidines was investigated by TiO2 anatase nanoparticles.
► The nature of the heterocyclic ring substituents influences the rate of reaction.
► Drastic effect is observed by the substitution on the N1 of the heterocyclic ring.
► Experimental and theoretical results support the proposed electron-transfer mechanism.
► The nature of solvent affects the rate of reaction.
Journal: Journal of Molecular Catalysis A: Chemical - Volume 356, April 2012, Pages 46–52