1.1: triethylamine / toluene / 6 h / 0 - 5 °C 2.1: 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; 2,6-dimethylpyridine / toluene / 5 h / 0 - 35 °C 3.1: water; hydrogenchloride / 10 h / 25 - 30 °C 4.1: (1S)-1,2,3,4-tetrahydro-1-naphthalenylamine / ethyl acetate / 30 h / 25 - 30 °C 4.2: 0.33 h / 25 - 30 °C 5.1: N-ethyl-N,N-diisopropylamine; benzotriazol-1-ol; dicyclohexyl-carbodiimide / dichloromethane / 5 h / 0 - 30 °C 6.1: Dess-Martin periodane / dichloromethane / 0 - 30 °C View Scheme