... Liebigs Ann ... 1176 W. A. Gibbons, RA Hughes, M. Charahmbous, M. Christodoulou, A. Szeto, AE Aulabaugh, P. Mascagni, 1. Toth ... By stirring the amino acids la-e with di-tert-butyl dicarbonate in tert-butyl alcohol/water at pH = 11 - 12, the N-tert-butoxycarbonyl (Boc) amino acids lk ...