Alkoxysulfonyl radical species: acquisition and transformation towards sulfonate esters through electrochemistry
作者:Chun Zhang、Man Yang、Yanjie Qiu、Meijun Song、Hongyan Wang、Min Yang、Wenlin Xie、Jie Wu、Shengqing Ye
DOI:10.1039/d2sc04027a
日期:——
Sulfonyl radical mediated processes have been considered as a powerful strategy for the construction of sulfonyl compounds. However, an efficient and high atom-economical radical approach to the synthesis of sulfonate esters is still rare, owing to the limited tactics to achieve alkoxysulfonyl radicals. Herein, an electrochemical anodic oxidation of inorganic sulfites with alcohols is developed to
Aerobic C–C Bond Cleavage of Allylic Alcohols via Co-Catalyzed Hydrogen Atom Transfer
作者:Meng Deng、Mengqi Chu、Nan Li、Guohui Sun、Fei Li、Dade Guo、Guohui Kang、Baoming Ji
DOI:10.1021/acs.orglett.3c00556
日期:——
alcohols to access ketones. This novel approach presents excellent chemoselectivity, good functional group compatibility, and high yields. This reaction occurs through a HAT-initiated peroxide intermediate, and an adjacent glycol-type diradical fragmentation process is recommended.
已经开发出一种简单、有效的方法,用于 Co III -H 催化的叔烯丙醇的有氧 C-C 键裂解以获得酮。这种新方法具有出色的化学选择性、良好的官能团相容性和高产率。该反应通过 HAT 引发的过氧化物中间体发生,建议使用相邻的乙二醇型双自由基裂解过程。
Electrochemical synthesis of γ-keto sulfones containing a β-quaternary carbon center <i>via</i> 1,2-migration
An effective electrochemical rearrangement reaction, both oxidant and metal catalyst-free, is presented to construct γ-keto sulfones containing a β-quaternary carbon center in this study. In the protocol, radicals are generated from benzenesulfonyl hydrazines, which cause 1,2-migrations of starting materials, 2-methylallyl alcohol derivatives, and formation of new C–C and C–S bonds. A series of aryl-migration