作者:Jin, Yangbin、Li, Mingda、Chen, Yupeng、Li, Jiarui、Wu, Wanqing、Jiang, Huanfeng
DOI:10.1021/acs.orglett.4c01052
日期:——
Herein we report a palladium-catalyzed oxidative N-α,β-dehydrogenation of amides to produce a range of enamides with high yields and excellent tolerance toward different functional groups. Mechanistic studies indicate that the reaction involves allylic C(sp3)–H activation followed by β-H elimination. The effectiveness of this approach is demonstrated through late-stage functionalization of bioactive molecules
烯酰胺及其衍生物是在各种生物活性分子中发现的重要生物活性药效团。在此,我们报道了一种钯催化的酰胺氧化N -α,β-脱氢反应,以高产率和对不同官能团的优异耐受性生产一系列烯酰胺。机理研究表明,该反应涉及烯丙基 C(sp 3 )–H 活化,然后是 β-H 消除。该方法的有效性通过生物活性分子的后期功能化以及通过产品精制合成有价值的化合物得到证明。