Methyltrichlorosilane-DMSO: A Facile and Highly Efficient Recipe for the Chlorination of Enamides and Enecarbamates
作者:Xiaoxia Lu、Jian Sun、Deqing Lin、Ke Cheng
DOI:10.1055/s-0029-1218005
日期:2009.11
A facile and highly efficient method was developed for the chlorination of enamides and enecarbamates with the combined use of methyltrichlorosilane and DMSO, which allowed one-pot production of the corresponding β-chloro enamides and enecarbamates in high yield and good stereoselectivity. This method is easy to operate and suitable for both cyclic and acyclic substrates.
Au-Catalyzed Stereoselective Ritter Reaction of Haloalkynes with Nitriles for (<i>Z</i>
)-<i>β</i>
-Halogenated Enamides
作者:Congrong Liu、Fulai Yang
DOI:10.1002/ejoc.201901318
日期:2019.10.31
An efficient and stereoselective protocol has been developed for the synthesis (Z)‐β‐Halogenated enamide via gold catalyzed Ritter reaction. In the presence of 2 mol‐% BrettPhosAuCl and 2 mol‐% AgNTf2, a broad range of nitriles smoothly underwent Ritter reaction with aromatic, vinylic or aliphatic haloalkynes to give structurally diverse (Z)‐β‐Halogenated enamides in excellent to good yields.