Cu-Catalyzed Efficient Synthetic Methodology for Ebselen and Related Se−N Heterocycles
作者:Shah Jaimin Balkrishna、Bhagat Singh Bhakuni、Deepak Chopra、Sangit Kumar
DOI:10.1021/ol102027j
日期:2010.12.3
An efficient copper-catalyzed method for the synthesis of biologically important ebselen and related analogues containing a Se-N bond has been developed. This is the first report of a catalytic process of selenation and Se-N bond formation reaction. Copper-catalyzed reaction tolerates functional groups such as amides, hydroxyls, ethers, nitro, fluorides, and chlorides. The best results are obtained by using a combination of potassium carbonate as a base, Iodo- or bromo-arylamide substrates, selenium powder, and copper iodide catalyst.