One-pot synthesis of sulfonyl (E)-stilbenes by nitrobenzene-mediated dimerizative desulfonation of benzylic sulfones
摘要:
A facile one-pot synthetic route for preparing sulfonyl (E)-stilbenes 4 is developed. The efficient route is realized by a nitrobenzene (PhNO2)-mediated dimerizative desulfonation of benzylic sulfones 3 in the presence of sodium hydride (NaH) in good yields. Some synthetic investigations of sulfonyl stilbenes 4 are also examined. (C) 2014 Elsevier Ltd. All rights reserved.
Visible-light mediated sulfonylation of thiols <i>via</i> insertion of sulfur dioxide
作者:Akshay M. Nair、Shreemoyee Kumar、Indranil Halder、Chandra M. R. Volla
DOI:10.1039/c9ob01040h
日期:——
mediated synthesis of thiosulfonates via a radical–radical coupling of sulfenyl radicals and arylsulfonyl radicals was developed. The reaction of thiols, aryldiazonium tetrafluoroborates and DABSO proceeded at room temperature using 5 mol% eosin Y. The reaction displayed wide functional group tolerance and delivered the unsymmetrical thiosulfonates in good to excellent yields.
Palladium-Catalyzed Direct α-Arylation of Methyl Sulfones with Aryl Bromides
作者:Bing Zheng、Tiezheng Jia、Patrick J. Walsh
DOI:10.1021/ol400472v
日期:2013.4.5
A direct and efficient approach for palladium-catalyzed arylation of aryl and alkyl methyl sulfones with aryl bromides has been developed. The catalytic system affords arylated sulfones in good to excellent yields (73–90%).
Palladium-Catalyzed Sulfination of Aryl and Heteroaryl Halides: Direct Access to Sulfones and Sulfonamides
作者:Andrei Shavnya、Steven B. Coffey、Aaron C. Smith、Vincent Mascitti
DOI:10.1021/ol403072r
日期:2013.12.20
A novel palladium-catalyzed sulfination of aryl and heteroaryl halides is described. This reaction operates under mild conditions and provides access to a wide range of aryl and heteroaryl sulfinates, a useful and versatile class of synthetic intermediates. Capitalizing on this sulfination reaction, one-pot protocols allowing direct access to sulfones and sulfonamides have also been developed. The
Synthesis of sulfone derivatives via palladium-catalyzed cross-coupling of benzyl trimethylammonium triflates and sulfonyl hydrazides
作者:Juelin Wan、Weijie Yu、Tao Wang、Jin Luo
DOI:10.1080/10426507.2021.2016758
日期:2022.7.3
Abstract A palladium-catalyzedcross-coupling of benzyl trimethylammonium triflates and sulfonyl hydrazides for the synthesis of various benzyl sulfones is reported. This novel protocol shows widespread functional group tolerance, leading to the desired sulfones in moderate to excellent yields.
A general and practical sulfonylation of benzylic ammonium salts with sulfonyl hydrazides for the synthesis of sulfones
作者:Haibo Zhu、Yingying Zhang、Yishuai Liu、Liu Yang、Zongbo Xie、Guofang Jiang、Zhang-Gao Le
DOI:10.1016/j.tetlet.2020.151975
日期:2020.6
transition-metal-free cross-coupling of sulfonyl hydrazides with benzyl ammonium salts has been developed to synthesize benzyl sulfones using Cs2CO3 as base under mild conditions. The protocol employs stable and easy to handle coupling partners, and is endowed with good substrate compatibility, leading to functional benzyl sulfones in good yields.
已经开发出一种实用且有效的方法,该方法采用磺酰肼与苄基铵盐的无过渡金属交叉偶联,以Cs 2 CO 3为碱,在温和条件下合成苄基砜。该方案使用稳定且易于操作的偶联伙伴,并具有良好的底物相容性,从而可以高收率生产功能性苄砜。