Instantaneous Deprotection of Tosylamides and Esters with SmI<sub>2</sub>/Amine/Water
作者:Tobias Ankner、Göran Hilmersson
DOI:10.1021/ol802243d
日期:2009.2.5
SmI2/amine/water mediates instantaneous cleavage of tosyl amides and tosyl esters. Highlyhindered, sensitive and functionalized substrates were successfully deprotected in near quantitative yield.
Copper-catalyzed N-arylation of tert-butyl N-sulfonylcarbamates with diaryliodonium salts at room temperature
作者:Soo-Yeon Moon、Moonjee Koh、Kris Rathwell、Seo-Hee Jung、Won-Suk Kim
DOI:10.1016/j.tet.2015.01.032
日期:2015.3
A new and mild synthetic approach for the synthesis of N-arylsulfonamides under copper-catalyzed conditions at room temperature has been developed. The reaction employs various tert-butyl N-sulfonylcarbamates and diaryliodoniumsalts to avoid potential genotoxic impurities. A one-pot coupling/Boc-deprotection sequence is also reported to provide mono N-arylsulfonamides in good to excellent yields.