Ruthenium-catalyzed hydroamidations of alkynes allow a concise synthetic entry to both E- and Z-configured enamide natural products. This was demonstrated by the synthesis of botryllamides C and E, lansiumamides A and B, and lansamide I in 1-3 steps and 57-98% yield from simple, commercially available precursors.
炔烃的钌催化加氢酰胺化允许简洁的合成进入 E-和 Z-配置的烯酰胺天然产物。这通过从简单的市售前体以 1-3 个步骤合成葡萄酰胺 C 和 E、兰胺酰胺 A 和 B 以及兰酰胺 I 以及 57-98% 的产率得到了证明。
Synthesis of Linear Enamides and Enecarbamates
<i>via</i>
Photoredox Acceptorless Dehydrogenation
作者:Ritu、Daniel Kolb、Nidhi Jain、Burkhard König
DOI:10.1002/adsc.202201259
日期:2023.2.21
decatungstate (TBADT) as hydrogen atom transfer (HAT) agent and a cobaloxime co-catalyst for dihydrogen evolution for the dehydrogenative preparation of linear enamides and enecarbamates from saturated precursors. The substrate scope includes several natural products and drug derivatives. The reaction does not require noble metal catalysts, exhibits short reaction times compared to previous methods and is suitable