Copper-Catalyzed Radical Reaction of <i>N</i>-Tosylhydrazones: Stereoselective Synthesis of (<i>E</i>)-Vinyl Sulfones
作者:Shuai Mao、Ya-Ru Gao、Xue-Qing Zhu、Dong-Dong Guo、Yong-Qiang Wang
DOI:10.1021/acs.orglett.5b00461
日期:2015.4.3
radical reaction to synthesize vinylsulfones from readily available N-tosylhydrazones has been described. The protocol provides a novel strategy for the synthesis of various vinylsulfones including α, β-disubstituted ones and terminal ones. The advantages of the transformation include excellent E stereoselectivity, broad substrate scope, low cost of reagents, and convenient operation. A novel and efficient
Silver(I)-mediated reaction of trimethylsilylated arylacetylenes with sulfonyl chlorides: Unexpected formation of vinyl sulfones
作者:Gui Sheng Deng、Teng Fei Sun
DOI:10.1016/j.cclet.2012.07.017
日期:2012.10
Abstract A novel reaction of trimethylsilylated arylacetylenes with sulfonyl chlorides was performed in the presence of silver nitrate or triflate. Conjugated vinyl sulfones as dramatic products were obtained in moderate yields and with Z -selectivity. A free radical mechanism has been proposed to account for the formation of the products.