Copper(I)-Fesulphos Lewis Acid Catalysts for Enantioselective Mannich-Type Reaction of <i>N</i>-Sulfonyl Imines
作者:Alvaro Salvador González、Ramón Gómez Arrayás、Juan C. Carretero
DOI:10.1021/ol060866v
日期:2006.7.1
[reaction: see text] Copper(I) complexes of Fesulphos ligands are efficient chiral Lewis acid catalysts in the Mannich-type addition of silylenolethers of ketones, esters, and thioesters to N-(2-thienyl)sulfonyl aldimines. The corresponding opticallyactive beta-amino carbonyl derivatives were obtained in good yields (58-91%) and with moderate to good enantioselectivity (61-93% ee). Removal of the N-activating