A facile route to obtain ynamides in high yields was described. The products were achieved through the iron-catalyzed C-N coupling reaction of amides with alkynyl bromides in the presence of 20 mol % of N,N'-dimethylethane-1,2-diamine (DMEDA).
Copper(I)-Catalyzed Highly Regio- and Stereoselective Boron Addition-Protonolysis of Alkynamides to give Alkenamides
Copper-catalyzed and highly chemoselective reduction of N-alkynylamides by a boronaddition–protonolysis protocol is presented. The reaction proceeds with the addition of boryl-copper complex to N-alkynylamides with high regioselectivity and stereoselectivity, followed by regiocontrolled transmetallation of the α-site of the alkenylboronate with MeOCuL to afford N-alkenylamides in good yields. Deuterium
Access to Ynamides via CuO-Mediated Oxidative Amidation of Alkynes
作者:Chengfeng Xia、Xiaogang Tong、Guanghui Ni、Xu Deng
DOI:10.1055/s-0031-1290464
日期:——
Copper(II) oxide mediated the direct coupling of terminal alkynes and amides by way of C-H functionalization to afford ynamides as useful building blocks. Some alkali halides such as KCl were discovered to play a key role as additive in the coupling reaction, while other salts could suppress the formation of products.
氧化铜 (II) 通过 CH 官能化介导末端炔烃和酰胺的直接偶联,以提供作为有用结构单元的 ynamide。一些碱金属卤化物如 KCl 被发现在偶联反应中作为添加剂起关键作用,而其他盐类可以抑制产物的形成。