Tetrahedron Letters p. 4413 - 4416 (1999)
Update date:2022-08-04
Topics:
Felice, Elena
Fioravanti, Stefania
Pellacani, Lucio
Tardella, Paolo A.
N-Substituted α-amino β-oxo esters have been obtained by amination of β-enamino esters with ethyl N-[(4-nitrobenzenesulphonyl)oxy]carbamate (NsONHCO2Et), in the absence of added bases. The use of optically active pyrrolidines with C2 symmetry as chiral auxiliaries induces diastereoselectivities up to 80%.
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