Michael addition reactions between various nucleophilic glycine equivalents and (S,E)-1-enoyl-5-oxo-N-phenylpyrrolidine-2-carboxamide, an optimal type of chiral Michael acceptor in the asymmetric synthesis of β-phenyl pyroglutamic acid and related compounds

1. Ellis, T.K.
2. Ueki, H.
3. Tiwari, R.
4. Soloshonok, V.A.