1: 89 percent / 6N NaOH / ethanol / Ambient temperature 2: 1.) 1N KCl, 1N NaOH, subtilisin, 2.) 6N HCl / 1.) water, 1 h, 2.) water, reflux, 4 h 3: NaHCO3, 3N NaOH / tetrahydrofuran / pH 10 View Scheme

hydrogenchloride