Photocatalytic oxidation of dihydropyrimidinones using titanium dioxide suspension

被引：8
|
作者：
Nasr-Esfahani, Masoud [1 ]
Montazerozohori, Morteza [1 ]
Abdi, Karim [1 ]
机构：
[1] Univ Yasuj, Dept Chem, Yasuj 75918, Iran
来源：
ARKIVOC | 2009年
关键词：
Titanium dioxide; photocatalytic; photooxidation; dihydropyrimidinone; CALCIUM-CHANNEL BLOCKERS; HANTZSCH 1,4-DIHYDROPYRIDINES; SUBSTITUTED; 1-ACETONAPHTHONES; HETEROGENEOUS PHOTOCATALYSIS; WASTE-WATER; METAL-IONS; AROMATIZATION; EFFICIENT; TIO2; ACID;
D O I：
10.3998/ark.5550190.0010.a23
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Photocatalytic oxidation has been used for the oxidation of some ethyl 3,4-dihydropyrimidin-2(1H)-one-5-carboxylates to their corresponding ethyl pyrimidin-2(1H)-one-5-carboxylates using a TiO2/O-2 system under UV irradiation by a 400 W high pressure mercury lamp in acetonitrile. The results revealed that the order of photocatalytic activity for photooxidation was TiO2 (anatase) > TiO2 (rutile). The effects of some other physicochemical parameters such as amount of photocatalyst, pH, solvent and time of irradiation were studied. The pyrimidinones were attained from the related dihydropyrimidinones after 2-4.5 h. The results showed the photo stability of this type of compound.
引用
收藏
页码：255 / 264
页数：10
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