由烯烃和磺酰肼通过电化学氧化磺酰化反应制备了各种乙烯基砜。该反应在配备了石墨和铁电极且使用KI作为氧化还原催化剂和支持电解质的实验方便的未分隔电化学电池中进行。施加高达270 mA / cm 2的极高电流密度,可以在紧凑的反应器中以小表面积电极快速合成。利用循环伏安法提出了一种可能的反应机理。在该反应中阳极和阴极过程的结合使得可以在温和的条件下以中等至高的产率获得产物。
The synthesis of vinyl sulfone derivatives via the reaction of arylpropiolic acids, K2S2O5, and aryl boronic acids is reported. The CuBr2/1,10-phenanthroline catalytic system in the presence of acetic acid provides the desired vinyl sulfones in moderate to good yield. Furthermore, the methodology features excellent functional group tolerance.
报道了通过芳基丙炔酸、K 2 S 2 O 5和芳基硼酸的反应合成乙烯基砜衍生物。在乙酸存在下的 CuBr 2 /1,10-菲咯啉催化体系以中等至良好的产率提供所需的乙烯基砜。此外,该方法具有出色的官能团耐受性。
Copper-Catalyzed Heck-Type Couplings of Sulfonyl Chlorides with Olefins: Efficient and Rapid Access to Vinyl Sulfones
作者:Lixia Liu、Pan Xue、Qiulin Chen、Chengming Wang
DOI:10.1016/j.tetlet.2021.153319
日期:2021.9
A copper-catalyzed redox-neutral alkene sulfonylation reaction has been developed. This reported protocol can be easily scale up to a gram scale, and smoothly applied to the late-stage modification of several bioactive molecules.
Visible-light-induced decarboxylative sulfonylation of cinnamic acids with sodium sulfinates by using Merrifield resin supported Rose Bengal as a catalyst
作者:Pinhua Li、Guan-Wu Wang
DOI:10.1039/c9ob00790c
日期:——
decarboxylative sulfonylation of cinnamic acids with sodium sulfinates for the synthesis of vinyl sulfones was developed. The reaction proceeded smoothly in the presence of Merrifield resin supported Rose Bengal ammonium salt as a photocatalyst and tert-butyl hydroperoxide (70% in water) as an oxidant in aqueous DMSO solution at roomtemperature under green LED (530-535 nm) irradiation under an air atmosphere
Aerobic Copper-Catalyzed Synthesis of (<i>E</i>)-Vinyl Sulfones by Direct C–S Bond Oxidative Coupling
作者:Xiao Liang、Mingteng Xiong、Heping Zhu、Kexin Shen、Yuanjiang Pan
DOI:10.1021/acs.joc.9b01400
日期:2019.9.6
Copper-catalyzed aerobic oxidative C–Sbond coupling reaction between thiophenols and aryl-substituted alkenes for (E)-vinyl sulfones synthesis is reported here. With air utilized as a green oxidant, this transformation not only produces various vinyl sulfones in moderate to good yields but also possesses a simple and ecofriendly system. To clarify the mechanism, kinetic experiments has been investigated
N,N′-Disulfonylhydrazines: New sulfonylating reagents for highly efficient synthesis of (E)-vinyl sulfones at room temperature
作者:Dongping Luo、Lin Min、Weiping Zheng、Lidong Shan、Xinyan Wang、Yuefei Hu
DOI:10.1016/j.tet.2020.131019
日期:2020.3
has not been applied in organic synthesis except the formation of disulfones by self-dimerization of sulfonyl radicals. In this article, they were introduced as new sulfonylating reagents and their combinations with NIS and Et3N were established as excellent iodosulfonylating reagents for alkenes. Finally, a highly efficient method for the synthesis of (E)-vinyl sulfones was developed by mixing an alkene