Iron-Catalyzed Regio- and Stereoselective Chlorosulfonylation of Terminal Alkynes with Aromatic Sulfonyl Chlorides
作者:Xiaoming Zeng、Laurean Ilies、Eiichi Nakamura
DOI:10.1021/ol203446t
日期:2012.2.3
Terminal alkynes react with aromatic sulfonyl chlorides in the presence of an iron(II) catalyst and a phosphine ligand to give (E)-β-chlorovinylsulfones with 100% regio- and stereoselectivity. Various functional groups, such as chloride, bromide, iodide, nitro, ketone, and aldehyde, are tolerated under the reaction conditions. Addition of tosyl chloride to a 1,6-enyne followed by radical 5-exo-trig
The atom‐economic and one‐pot regio‐ and stereoselective addition of sodiumarenesulfinates to either alkynes or alkenes can be achieved with an iron(III) chloride hexahydrate [FeCl3⋅6 H2O] catalytic system to afford β‐haloalkenyl and β‐chloroalkyl sulfones in moderate to good yields.