Regio- and Stereoselective Installation of Bromide onto Vinyl Sulfonyl Fluorides: Construction of a Class of Versatile Sulfur Fluoride Exchange Hubs
作者:Xu Zhang、Wan-Yin Fang、Hua-Li Qin
DOI:10.1021/acs.orglett.2c01509
日期:2022.6.10
A convenient protocol for the exclusively regio- and stereoselective installation of a bromine atom on the 2-arylvinylsulfonyl fluorides using lithium bromide (LiBr) as the bromine source was described, providing (Z)-1-bromo-2-arylethene-1-sulfonyl fluorides (Z-BASF) with versatile reactive handles (bromide, vinyl, and sulfonyl fluoride) in ≤88% yield. Meanwhile, Z-BASF molecules displayed various
描述了使用溴化锂 (LiBr) 作为溴源在 2-芳基乙烯基磺酰氟上专门区域和立体选择性安装溴原子的便捷方案,提供 ( Z )-1-bromo-2-arylethene-1-sulfonyl氟化物 ( Z -BASF) 具有多种反应性处理物(溴化物、乙烯基和磺酰氟),收率≤88%。同时,Z -BASF分子在一系列化学转化中表现出不同的反应性。
Access to Sulfocoumarins by Three‐Component Reaction of β‐Keto Sulfonyl Fluorides, Arynes, and DMF
A novelsynthesis of sulfocoumarins by three-component reaction of β-keto sulfonyl fluorides, arynes and DMF is reported. The reaction proceeds via trapping of the in situ generated o-quinone methides with β-keto sulfonyl fluorides, followed by selective cyclization with sulfonyl fluorides. This strategy provides a new avenue to access diverse sulfocoumarins under mild conditions.
Photo-organocatalytic Synthesis of β-Keto Sulfonyl Fluorides via Radical Fluorosulfonylation of Vinyl Acetates
作者:Peng Wang、Shao-Jie Li、Saihu Liao、Honghai Zhang、Na Yang
DOI:10.1055/s-0041-1738692
日期:2023.3
metal-free synthesis of useful β-keto sulfonyl fluorides has been established via radical fluorosulfonylation of ketone-derived vinyl acetates under photoredox organocatalysis by using 1-fluorosulfonyl benzoimidazolium (FABI) as the fluorosulfonyl radical source and oxygen-doped anthanthrene (ODA) as the photocatalyst. A series of aryl and alkyl β-keto sulfonyl fluorides as well as cyclic analogues