1: 68 percent / di-tert-butylmethylpyridine; DMTST; MS 4A / CH2Cl2 / 2 h / 20 °C 2: 100 percent / TAS-F / dimethylformamide / 1 h 3: 100 percent / H2; Amberlite IR-45(OH-) / Pd/C / methanol; ethyl acetate / 5688.78 Torr View Scheme