Efficient Conversion of Epoxides
into β-Hydroperoxy Alcohols Catalyzed by Antimony Trichloride/SiO<sub>2</sub>
作者:Zhan-Hui Zhang、Tong-Shuang Li、Yu-Heng Liu
DOI:10.1055/s-0028-1083147
日期:——
Efficient ring-opening of various epoxides with hydrogen peroxide, catalyzed by antimony trichloride/SiO2, afforded the corresponding β-hydroperoxy alcohols in good to excellent yields under mild reaction conditions. The reactions were efficiently promoted by ultrasound irradiation.
Magnetic Nanoparticles (CoFe<sub>2</sub>O<sub>4</sub>)-Supported Phosphomolybdate as an Efficient, Green, Recyclable Catalyst for Synthesis of β-Hydroxy Hydroperoxides
AbstractMagnetic nanoparticles (CoFe2O4)‐supported phosphomolybdate ([CoFe2O4@SiO2‐PrNH2‐PMo]) was readily prepared and identified as an efficient catalyst for ring‐opening of various epoxides with ethereal hydrogen peroxide (H2O2). The reaction proceeded under mild conditions to give β‐hydroxy hydroperoxides (HHPs) in high yields at room temperature, and the catalyst could be magnetically separated and recycled.magnified image
Magnetic nano-graphene oxide-supported molybdenum (Fe3O4/GO-Mo) as a green, efficient, and recyclable catalyst for synthesis of β-hydroxy hydroperoxides
作者:Yu-Heng Liu、Hai-Chuan Hu、Zi-Chuan Ma、Yan-Fei Dong、Can Wang、Yun-Meng Pang
DOI:10.1007/s00706-017-2092-8
日期:2018.3
AbstractMagnetic nano-graphene oxide-supported molybdenum was readily prepared and identified as an efficient and recyclablecatalyst for ring opening of various epoxides with ethereal hydrogen peroxide. The reaction proceeded under mild conditions to give β-hydroxy hydroperoxides in excellent yields at room temperature. The catalyst could be easily separated and recycled by applying a permanent magnet. Graphical
A General and Practical Approach for the Synthesis of 1,2,4-Trioxanes Catalyzed by Silica-Ferric Chloride
作者:Mo Zhang、Yi Han、Jia-Liang Niu、Zhan-Hui Zhang
DOI:10.1002/adsc.201700671
日期:2017.10.25
An efficient and practical method has been developed for the facile synthesis of 1,2,4-trioxanes by the condensation of β-hydroperoxy alcohols and carbonyl compounds in the presence of a catalytic amount of silica-supported ferric chloride (FeCl3/SiO2) at room temperature. The method has the benefits of operational simplicity, high yields and potential large-scale application. Moreover, the catalyst