Highly Enantioselective Synthesis of α,β-Diaminopropanoic Acid Derivatives Using a Catalytic Asymmetric Hydrogenation Approach
作者:Andrea J. Robinson、Chin Yu Lim、Linnan He、Philip Ma、Hui-Yin Li
DOI:10.1021/jo001151n
日期:2001.6.1
Rh-DuPhos-catalyzed asymmetric hydrogenation of alpha,beta-diamidoacrylates provides a highly efficient and enantioselective route to chiral alpha,beta-diaminopropanoic acid derivatives. The mechanistic course of the hydrogenation was studied using isotopically enriched enamide complexes and phosphorus and carbon NMR. Addition of methyl alpha-N-benzoyl-beta-N-acetyl-diaminopropenoate to the solvated