Reaction of α-t-butyl γ-methyl N-trityl-L-glutamate (7) with lithium isopropylcyclohexylamide in hexane leads to the specific formation of the γ-ester enolate, a potential synthetic equivalent to the γ-anion synthon for stereospecific α-amino acid synthesis.
J. E. Baldwin, M. North, A. Flinn and M. G. Moloney, J. Chem. Soc., Chem. Commun., 1988, 828 DOI: 10.1039/C39880000828
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