twelve aryl(phenyl)iodonium salts in a systematic chemoselectivitystudy. A new “anti‐ortho effect” has been identified in the arylation of malonates. Several “dummy groups” have been found that give complete chemoselectivity in the transfer of the phenyl moiety, irrespective of the nucleophile. An aryl exchange in the diaryliodoniumsalts has been observed under certain arylation conditions. DFT calculations
novel 3-componentsynthesis of sulfonylated coumarins from diaryliodonium salts, arylpropynoates and sulfurdioxide is reported. The reaction proceeds under mild conditions at room temperature in the absence of any catalysts. This transformation is solely driven by visible light and opens a new opportunity for the sustainable synthesis of sulfones via the direct incorporation of sulfurdioxide.
Visible-Light Photoredox-Catalyzed Aminosulfonylation of Diaryliodonium Salts with Sulfur Dioxide and Hydrazines
作者:Nai-Wei Liu、Shuai Liang、Georg Manolikakes
DOI:10.1002/adsc.201601341
日期:2017.4.17
three‐component synthesis of N‐aminosulfonamides starting from diaryliodonium salts, hydrazines and sulfurdioxide is reported. This reaction proceeds under mild conditions at room temperature and is driven by visible light. A simple bisulfite salt can be used as a readily available and easy‐to‐handle sulfurdioxide source. Mechanistic studies support a catalytic photoredox pathway with the diaryliodonium