A general organic catalyst for asymmetric addition of stabilized nucleophiles to acyl imines
作者:Christiane M. Bode、Amal Ting、Scott E. Schaus
DOI:10.1016/j.tet.2006.07.071
日期:2006.12
Cinchona alkaloid-derived thiourea catalysts promote nucleophilic additions to acyl imines for the asymmetric synthesis of secondary amine adducts. The hydroquinine-derived thiourea catalyst efficiently promotes the aza-Henry reaction of nitroalkane with acyl imines, affording β-nitroamines in good yields with enantioselectivities of 90–98% ee and diastereoselectivities up to 97%. The scope of the