Cross coupling of sulfonyl radicals with silver-based carbenes: a simple approach to β-carbonyl arylsulfones
作者:Hanghang Wang、Pengcheng Lian、Yonggao Zheng、Jingjing Li、Xiaobing Wan
DOI:10.1039/d0ob00091d
日期:——
A radical–carbene coupling reaction of sulfonyl radicals and silver-based carbenes has been well established, which provides an efficient approach to various β-carbonyl arylsulfones.
Iodide/<i>tert-</i>Butyl Hydroperoxide-Mediated Benzylic C-H Sulfonylation and Peroxidation of Phenol Derivatives
作者:Wen-Chao Yang、Peng Dai、Kai Luo、Lei Wu
DOI:10.1002/adsc.201600541
日期:2016.10.20
iodine/tert‐butyl hydroperoxide (I2/TBHP)‐mediated benzylic C–H sulfonylation of phenol derivatives. This new methodology provides an economic, operationally simple and metal‐free approach toward C(sp3)–S bond formation with medium to excellent yields at room temperature. Moreover, a novel sulfonylative and peroxidative bifunctionalization of phenol derivatives was also achieved by changing the amount of
Electrochemical Radical δ-H Sulfonylation Reaction for the Synthesis of 4-((Aryl,Arylsul fonyl)methylene)-2,5-Cyclohexadiene Derivatives
作者:Lei Dai、Qiuyu Yu、Jinghang Zhang、Fan Wu、Chang Wang、Jinpeng Zhang、Liangce Rong
DOI:10.1021/acs.joc.1c01213
日期:2021.8.6
A novel and efficient electrochemical radical δ-H sulfonylation reaction of para-quinone methides (p-QMs) and sodium sulfinates has been achieved under common laboratory conditions. In this strategy, a new C(sp2)–S bond was constructed for the synthesis of 4-((aryl,arylsulfonyl)methylene)-2,5-cyclohexadiene derivatives with a broad substrate scope, good functional group tolerance, and mild conditions
Sulfonylation of the benzylic C–H bond is developed through a three-component reaction of aryldiazonium tetrafluoroborates, 4-methylphenols and sodium metabisulfite (Na2S2O5). The inorganic sulfite of sodium metabisulfite is used as the SO2 surrogate. In this transformation, benzylic C(sp3)–H bond sulfonylation is achieved in the presence of a photocatalyst under visible light. A radical pathway involving
苄基CH键的磺酰化是通过四氟硼酸芳基重氮,4-甲基苯酚和焦亚硫酸钠(Na 2 S 2 O 5)的三组分反应形成的。偏亚硫酸氢钠的无机亚硫酸盐用作SO 2替代物。在这种转化中,在可见光下,在光催化剂的存在下,实现了苄基的C(sp 3)–H键磺酰化。提出了涉及芳基磺酰基和分子间氢原子抽象的自由基途径。
Nickel-Catalyzed Direct Sulfonylation of Styrenes and Unactivated Aliphatic Alkenes with Sulfonyl Chlorides
作者:Wei-Hao Rao、Ying-Ge Li、Li−Li Jiang、Chang Gao、Yi-Zhuo Wang、Jia-Fan Liu、Fu-Yu Zhou、Guo-Dong Zou、Xinhua Cao
DOI:10.1021/acs.joc.4c00094
日期:2024.7.19
with sulfonylchlorides has been developed using 1,10-phenanthroline-5,6-dione as the ligand. Unactivated alkenes and styrenes including 1,1-, 1,2-disubstituted alkenes can be subjected to the protocol, and a wide range of vinyl sulfones was obtained in high to excellent yields with good functional group compatibility. Notably, the process did not allow the desulfonylation of sulfonylchloride or chlorosulfonylation