1: 41 percent / 2-aminoethanethiol; pyridine; triethylamine / methanol / 0.05 h / 20 °C 2: 94.3 percent / sodium methoxide / methanol; tetrahydrofuran / 1 h / 20 °C 3: 82.7 percent / β-glucosidase; Na2HPO4-citrate buffer / H2O / 52 h / 37 °C / pH 4.0 View Scheme

1: 34 percent / 2-aminoethanethiol; pyridine; triethylamine / methanol / 0.05 h / 20 °C 2: 93.5 percent / sodium methoxide / methanol; tetrahydrofuran / 1 h / 20 °C 3: 88.2 percent / β-glucosidase; Na2HPO4-citrate buffer / H2O / 90 h / 37 °C / pH 4.0 View Scheme