K. Ananda et Vvs. Babu, Deprotonation of hydrochloride salts of amino acid eaters and peptide esters using commercial zinc dust, J PEPT RES, 57(3), 2001, pp. 223-226
The deprotonation of hydrochloride salts of ethyl and methyl esters of amin
o acids and peptides is accomplished using activated zinc dust. The reactio
n is neat and quantitative. Thus, the free amino acid esters and peptide es
ters have been isolated in good yield and purity.