Two Dawson-type U(VI)-containing selenotungstates with sandwich structure and its high-efficiency catalysis for pyrazoles

被引：17

作者：

Cheng, Mengyuan ^{[1
]}

Liu, Yufeng ^{[2
]}

Du, Weixin ^{[1
]}

Shi, Jingwen ^{[1
]}

Li, Junhua ^{[1
]}

Wang, Haiying ^{[1
]}

Li, Ke ^{[2
]}

Yang, Guoping ^{[2
]}

Zhang, Dongdi ^{[1
]}

机构：

[1] Henan Univ, Coll Chem & Chem Engn, Henan Key Lab Polyoxometalate Chem, Kaifeng 475004, Peoples R China

[2] East China Univ Technol, Jiangxi Key Lab Mass Spectrometry & Instrumentat, Jiangxi Prov Key Lab Synthet Chem, Nanchang 330013, Jiangxi, Peoples R China

来源：

CHINESE CHEMICAL LETTERS | 2022年 / 33卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Selenotungstates; Uranium; Dawson-type; Condensation reaction; Pyrazoles; ROOM-TEMPERATURE SYNTHESIS; POLYOXOMETALATE CHEMISTRY; DERIVATIVES; DIAZEPINES; EVOLUTION; HYBRID; ACID; FE;

D O I：

10.1016/j.cclet.2021.11.059

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Two novel uranium-containing selenotungstates Na-3[H-19(UO2)(2)(mu O2-)(Se2W14O52)(2)]center dot 41H(2)O (U-2) and (NH4)(10)[H-4(SeO)(2)(UO2)(2)(H2O)(2)(H2Se2W14O52)(Se2W14O52)]center dot 66H(2)O (Se2U2) based on the {Se2W14O52} unit were successfully prepared and fully characterized. To our knowledge, the uranium is firstly introduced into the selenotungstates. Moreover, it is notable that U-2 exhibits excellent Lewis acid-base catalytic activities in the condensation cyclization of sulfonyl hydrazides with diketones to synthesize polysubstituted pyrazoles. All the desired products were obtained in moderate to good yields (up to 99%). (C) 2022 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.

引用

页码：3899 / 3902

页数：4

共 57 条

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