Stereoselective Additions of Thiyl Radicals to Terminal Ynamides
作者:Biplab Banerjee、Dmitry N. Litvinov、Junghoon Kang、Jennifer D. Bettale、Steven L. Castle
DOI:10.1021/ol1008679
日期:2010.6.4
Two complementary sets of conditions for radical additions of thiols to terminal ynamides are described. The use of 1 equiv of thiol affords the cis-β-thioenamide adducts in rapid fashion (10 min) and good dr, whereas employing excess thiol and longer reaction times favors the trans products.
描述了硫醇自由基加成至末端炔酰胺的两组互补条件。使用 1 当量的硫醇可以快速(10 分钟)和良好的 dr 提供顺式-β-硫烯酰胺加合物,而使用过量的硫醇和较长的反应时间有利于反式产物。