Thiazole, Imidazole and Oxazoline Based N,P-Ligands for Palladium-Catalyzed Cycloisomerization of 1,6-Enynes
作者:Xu Quan、Jianguo Liu、Wangchuk Rabten、Simone Diomedi、Thishana Singh、Pher G. Andersson
DOI:10.1002/ejoc.201600468
日期:2016.7
A series of N,P-ligands were prepared and evaluated in the asymmetric palladium-catalyzed cycloisomerization of allyl propargyl ether substrates. The reactivity and enantioselectivity of the reaction was shown to be highly dependent on the chiral skeleton of the ligand structures with ee's ranging from 22–99 %. The proton source had a significant impact on the enantioselectivity. The generation of