Copper(0)-Induced Deselenative Insertion of N,N-Disubstituted Selenoamides into Acetylenic C−H Bond Leading to Propargylamines
摘要:
Upon heating at 110 degrees C in the presence of copper(0) powder, terminal acetylenes undergo a novel deselenative C-H bond insertion reaction of N,N-substituted selenoamides, affording the corresponding propargylamines in good to excellent yields, selectively.
The reaction of selenoamides with organolithiumreagents proceeds in a carbophilic manner, and more interestingly, the presence of excess lithium reagents causes a novel deselenation reaction from the carbophilic adducts.