Uranyl-silicotungstate-containing hybrid building units {α-SiW9} and {γ-SiW10} with excellent catalytic activities in the three-component synthesis of dihydropyrimidin-2(1H)-ones

被引：39

作者：

Ding, Jian-Hua ^{[1
]}

Liu, Yu-Feng ^{[1
]}

Tian, Zhao-Teng ^{[1
]}

Lin, Pei-Jie ^{[1
]}

Yang, Feng ^{[3
]}

Li, Ke ^{[1
]}

Yang, Guo-Ping ^{[1
,2
]}

Wei, Yong-Ge ^{[2
]}

机构：

[1] East China Univ Technol, Sch Chem Biol & Mat Sci, Jiangxi Prov Key Lab Synthet Chem, Jiangxi Key Lab Mass Spectrometry & Instrumentat, Nanchang 330013, Peoples R China

[2] Tsinghua Univ, Dept Chem, Key Lab Organ Optoelect & Mol Engn, Minist Educ, Beijing 100084, Peoples R China

[3] Guangxi Normal Univ, Sch Chem & Pharmaceut Sci, Guilin 541000, Peoples R China

来源：

INORGANIC CHEMISTRY FRONTIERS | 2023年 / 10卷 / 11期

基金：

中国国家自然科学基金;

关键词：

POLYOXOMETALATE; COORDINATION; COMPLEXES; CHEMISTRY; LIGANDS;

D O I：

10.1039/d2qi02653h

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A novel uranyl-containing polytungstate, {K4.2Na18.9H0.9(H2O)(20)[K-4(UO2)(3)(H2O)(6)(alpha-SiW9O34)(gamma-SiW10O36)(3)]}ca.16H(2)O (U-3), was synthesized using the Keggin-type precursor [gamma-SiW10O36](8-) ({gamma-SiW10}) and UO2(OAc)(2) and was further characterized by single-crystal X-ray diffraction and various techniques. Single crystal X-ray diffraction analysis showed a quadrahedron-like structure of U-3 with interesting tarot-like (top view) and crown-like (side view) views, among which one central {K-4(UO2)(3)(H2O)(3)} cluster was surrounded by one {alpha-SiW9} and three {gamma-SiW10} building units. In addition, a more significant aspect is that U-3 shows good catalytic activity in the dehydration condensation of aldehydes, acetoacetates, and urea to green synthesize dihydropyrimidin-2(1H)-ones. The advantages of this transformation include solvent-free conditions, water as the sole by-product, available starting materials, good compatibility, and operational simplicity.

引用

页码：3195 / 3201

页数：8

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