Gold-catalyzed efficient preparation of linear α-haloenones from propargylic acetates
作者:Meng Yu、Guozhu Zhang、Liming Zhang
DOI:10.1016/j.tet.2008.11.107
日期:2009.2
Versatile linear α-iodo- and α-bromoenones are prepared efficiently from readily accessible propargylic acetates using 2 mol % of Au(PPh3)NTf2. This reaction is easy to execute and has broad substrate scope. Good to excellent Z-selectivities are observed in the cases of propargylic acetates derived from aliphatic aldehydes.
Gold-Catalyzed Efficient Formation ofα,β-Unsaturated Ketones from Propargylic Acetates
作者:Meng Yu、Guotao Li、Shaozhong Wang、Liming Zhang
DOI:10.1002/adsc.200600579
日期:2007.4.2
An efficient gold-catalyzed method for the preparation of α,β-unsaturated ketones from propargylic acetates has been developed. Under mild reaction conditions, β-monosubstituted enones were formed mostly with excellent E-selectivity. β,β-Disubstituted enones can be prepared from propargylic acetates derived from ketones. The high efficiency and mild nature of this reaction render it a viable alternative
Gold-Catalyzed Efficient Preparation of Linear α-Iodoenones from Propargylic Acetates
作者:Meng Yu、Guozhu Zhang、Liming Zhang
DOI:10.1021/ol070637o
日期:2007.5.1
Au(PPh3)NTf2 is needed to convert readily accessible propargylic acetates into versatile linear alpha-iodoenones in good to excellent yields. This reaction is easy to execute and has broad substrate scope. Good to excellent Z-selectivities are observed in the cases of aliphatic propargylic acetates derived from aldehydes.