Modular chiral β-selenium-, sulfur-, and tellurium amides: synthesis and application in the palladium-catalyzed asymmetric allylic alkylation
作者:Fabrício Vargas、Jasquer A. Sehnem、Fabio Z. Galetto、Antonio L. Braga
DOI:10.1016/j.tet.2007.10.086
日期:2008.1
have been efficiently synthesized from inexpensive and easily available 2-oxazolines. All the selenium, sulfur, and tellurium compounds were evaluated as chiral ligands in the palladium-catalyzedasymmetricallylicalkylation. The corresponding alkylated products were obtained in excellent enantiomeric excess, using BSA/CH2Cl2 as the base/solvent system.