Transition-Metal-Free Regioselective One-Pot Synthesis of Aryl Sulfones from Sodium Sulfinates via Quinone Imine Ketal
作者:Priyanka Halder、Vivek T. Humne、Santosh B. Mhaske
DOI:10.1021/acs.joc.8b02835
日期:2019.2.1
regioselective transition-metal-free one-pot synthesis of arylsulfones via the reactive quinone imine ketal intermediate is demonstrated using easily accessible bench-stable sulfinate salts. A broad range of functionality on p-anisidine substrates as well as sulfinate salts was tolerated under mild reaction conditions to provide the corresponding arylsulfones in good to excellent yields.
sulfonates toward sulfone derivatives has been developed under environmentally friendly conditions. This strategy represents an efficient and practical difunctionalization of olefins using water/aqueousmedia as a sustainable solvent. In addition, this transition metal-free reaction is high yield, and operationally simple, and in particular, proceeds under mild conditions to afford desired sulfones with high
在环境友好的条件下,开发了一种烯烃与喹喔啉-2(1 H )-酮和磺酸钠直接双官能化制备砜衍生物的方法。该策略代表了使用水/水介质作为可持续溶剂对烯烃进行有效且实用的双功能化。此外,这种不含过渡金属的反应收率高,操作简单,特别是在温和条件下进行,得到具有高官能团相容性的所需砜。
Eosin Y (EY) Photoredox-Catalyzed Sulfonylation of Alkenes: Scope and Mechanism
作者:Andreas Uwe Meyer、Karolína Straková、Tomáš Slanina、Burkhard König
DOI:10.1002/chem.201601000
日期:2016.6.13
Alkyl‐ and aryl vinyl sulfones were obtained by eosin Y (EY)‐mediated visible‐light photooxidation of sulfinate salts and the reaction of the resulting S‐centered radicals with alkenes. Optimized reaction conditions, the sulfinate and alkene scope, and X‐ray structural analyses of several reaction products are provided. A detailed spectroscopic study explains the reactionmechanism, which proceeds
The synthesis in water of new sulfone derivatives under microwave irradiation is described. This eco-friendly process leads to the expected products in good yields by reaction of various substituted sulfinates (commercially available or obtained by reduction of the corresponding sulfonyl chlorides) with 4-chloromethyl-2-methyl-5-nitro-1,3-thiazole. In order to evaluate the antiproliferative effect of these compounds, several sulfone derivatives are also dichlorinated on the Cα next to the sulfonyl group. An evaluation on different cancer cell lines reveals promising selective in vitro antiproliferative activity toward HepG2 human cell lines by dihydrogenated sulfones, suggesting further research should be to explore their anticancer potential in the treatment of liver cancer.