Metal‐Free, Multicomponent Anti‐Markovnikov Hydroarylsulfonylation and Alkoxyarylsulfonylation of Vinyl Arenes
作者:Pritha Das、Subhodeep Das、Kasarla Varalaxmi、Ranjan Jana
DOI:10.1002/adsc.202000995
日期:2021.1.19
catalyst, additive‐free conditions at room temperature from the corresponding aryldiazonium salts, DABSO (DABCO ⋅ 2SO2), and thiophenol as hydrogen atom transfer (HAT) reagent. Mechanistically, an incipient arylsulfonyl radical is generated from the corresponding aryl diazonium salts and DABSO which undergoes anti‐Markovnikov addition to styrenes followed by hydrogen atom transfer from thiophenol. Interestingly
A metal-free and regioselective approach to (Z)-β-fluorovinyl sulfones and their chemoselective hydrogenation to β-fluoroalkyl sulfones
作者:Daniel M. Sedgwick、Raquel Román、Pablo Barrio、Cristina Morales、Santos Fustero
DOI:10.1016/j.jfluchem.2017.12.016
日期:2018.2
metal-free hydrofluorination reaction of alkynyl sulfones was developed using TBAF—one of the cheapest and most commonly available fluoride sources. In addition, the reactivity of the resulting β-fluorovinyl sulfones was studied, focusing on their selective hydrogenation reaction. Both β-fluorovinyl sulfones and their hydrogenation products β-fluoroalkyl sulfones may find applications in medicinal and agrochemical
Alkyl (Het)Arylsulfones from SuFEx Reagents via Photochemical S–F Bond Activation
作者:Scott T. Shreiber、Gary A. Molander
DOI:10.1021/acs.orglett.3c00447
日期:2023.3.31
A visible light-induced S–F bondactivation of sulfur fluoride exchange (SuFEx) reagents to generate alkyl sulfones is described. The method is free of transition metals and relies on the use of commercially available commodity chemicals. In addition, this method demonstrates the first photoredox functionalization of SuFEx reagents. The reaction has a diverse substrate scope, with applications in various
Visible light-initiated manganese-catalyzed hydrosulfonylation of alkenes
作者:Chun-Min Li、Xin-Xin Dong、Zhe Wang、Bo Zhang
DOI:10.1039/d3gc00712j
日期:——
A visible light-initiated manganese-catalyzed radical hydrosulfonylation of a wide range of structurally diverse alkenes using commercially available and relatively cheap sulfonyl chlorides as sulfonyl radical sources is described.
Light-promoted photocatalyst-free and redox-neutral hydrosulfonylation of unactivated alkenes using sulfinic acid
作者:Yibo Song、Cheng Li、Xueyuan Hu、Hongdie Zhang、Yujian Mao、Xiachang Wang、Chen Wang、Lihong Hu、Jianming Yan
DOI:10.1039/d4gc00440j
日期:——
A hydrosulfonylation reaction of unactivated alkenes with sulfinicacids was realized under light irradiation. This reaction features photocatalyst- and additive-free conditions. A diverse set of unactivated alkenes can be transformed into alkyl-substituted sulfones with good yields and anti-Markovnikov regioselectivity. The present protocol was amenable to gram-scale synthesis, as well as late-stage