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.
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。