Silver-Catalyzed Rearrangement of Propargylic Sulfinates to Allenic Sulfones
作者:Michael Harmata、Chaofeng Huang
DOI:10.1002/adsc.200700447
日期:2008.5.5
Treatment of propargylicsulfinate esters with 2 mol % of silver hexafluoroantimonate results in the rapid formation of allenicsulfones in essentially quantitative yield.
Synthesis of 3-(Arylsulfonyl)-3-pyrrolines from Allenyl Sulfonamides by Silver Ion Catalysis
作者:Rama Rao Tata、Chencheng Fu、Steven P. Kelley、Michael Harmata
DOI:10.1021/acs.orglett.8b02440
日期:2018.9.21
Treatment of allenyl sulfonamides with catalytic amounts of silver fluoride in acetonitrile at reflux afforded the corresponding 3-sulfonyl-3-pyrrolines in excellent yields by intramolecular hydroamination via a 5-endo-trig cyclization. The starting allenyl sulfonamides were prepared by lithiation of allenic sulfones and trapping with various N-sulfonylimines.