Efficient Palladium-Catalysed Enamide Synthesis from Enol Triflates and Enol Tosylates
作者:Michael C. Willis、Gareth N. Brace、Ian P. Holmes
DOI:10.1055/s-2005-918480
日期:——
Catalysts generated from Pd 2 (dba) 3 and biphenyl ligands 4 and 7 efficiently promote the coupling of amides and carbamates with unactivated vinyl triflates and tosylates, to provide enamides in good to excellent yields.
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.