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
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
Regioselective Hydroperoxylation of Aziridines and Epoxides Only with Aqueous Hydrogen Peroxide
作者:SK Abu Saleh、Atanu Hazra、Saumen Hajra
DOI:10.1002/adsc.202100858
日期:2022.1.18
commercially available 50% aq. H2O2. This method provides an access to secondary benzylic β-hydroperoxy amines and -alcohols and tertiary 3-hydroperoxy oxindoles. The protocol is also applicable to the less reactive alkyl aziridines. Furthermore, an acid-catalyzed Kornblum-DeLaMare type rearrangement of secondary benzylic hydroperoxide has also been revealed to afford amino- and hydroxyl ketones.
已经使用市售的 50% 水溶液探索了氮丙啶和环氧化物(包括螺环氮丙啶和螺环氧羟吲哚)的催化剂和无有机溶剂区域选择性加氢过氧化。H 2 O 2。该方法提供了获得仲苄基β-氢过氧胺和β-醇和叔3-氢过氧羟吲哚的途径。该协议也适用于反应性较低的烷基氮丙啶。此外,酸催化的 Kornblum-DeLaMare 型仲苯甲基氢过氧化物重排也被揭示可提供氨基酮和羟基酮。