Enantioselective One-Pot Synthesis of α-Amino Esters by a Phosphine-Catalyzed [3+2]-Cycloaddition Reaction
作者:Marianne Steurer、Kim L. Jensen、Dennis Worgull、Karl Anker Jørgensen
DOI:10.1002/chem.201103502
日期:2012.1.2
Phosphines go one‐pot: The one‐pot synthesis of cyclic α‐amino esters from azlactones and allenes by a phosphine‐catalyzed [3+2]‐cycloaddition reaction followed by a ring opening of the azlactone moiety is presented. The products are isolated as single regioisomers in good overall yields and high enantioselectivities (up to 95 % ee). The possibility for easy modifications of the obtained products was