Abstract
Aqueous polymerization of p-nitrophenyl esters of proteinaceous α-amino acids is much more efficient in the presence of sodium hydrogen carbonate than in the presence of sodium hydroxide for a given pH. Evidence is presented for the intermediary formation of Leuchs' anhydride in the presence of bicarbonate anions. The prebiotic significance of such a mechanism favouring the polymerization of proteinaceous α-amino acids, i.e. C α-mono-substituted amino acid, is discussed.
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