Chemoselective Deprotection of Sulfonamides Under Acidic Conditions: Scope, Sulfonyl Group Migration, and Synthetic Applications
作者:Tomas Javorskis、Edvinas Orentas
DOI:10.1021/acs.joc.7b02507
日期:2017.12.15
Chemoselective acidic hydrolysis of sulfonamides with trifluoromethanesulfonic acid has been evaluated as a deprotection method and further extended to more complex synthetic applications. In contrast to conventional troublesome sulfonamide hydrolysis, a near-stoichiometric amount of acid was found to be sufficient to bring about efficient deprotection of various neutral or electron-deficient N-arylsulfonamides
磺酰胺与三氟甲磺酸的化学选择性酸性水解已被评估为一种脱保护方法,并进一步扩展到更复杂的合成应用中。与常规的麻烦的磺酰胺水解相反,发现接近化学计量的酸足以引起各种中性或电子缺陷的N-芳基磺酰胺的有效脱保护,而富电子的底物提供了磺酰基迁移产物。所开发的脱保护方法对N-芳基磺酰胺具有完全选择性,并且证明了区分各种不同磺酰胺的可能性。