The first palladium-catalyzed Sonogashira coupling of amides has been developed, which proceeds via a selective cleavage of the N-acylsaccharin C–N bond. The protocol is mild, highly functional group tolerant and can be efficiently employed in the synthesis of a broad array of ynones in 48–98% yields under low catalyst loading and Cu-free conditions.
已开发出第一种钯催化的酰胺Sonogashira偶联反应,该反应通过选择性断裂N-酰基糖胺C-N键进行。该方案温和,对官能团具有很高的耐受性,并且可以在低催化剂负载和无铜条件下高效地合成广泛的炔酮,产率为48-98%。