C(OC(=O)[NH:7][C@@H:8]1[CH2:13][CH2:12][N:11]([CH3:14])[CH2:10][C@H:9]1[O:15][CH3:16])(C)(C)C.Cl>>[CH3:16][O:15][C@H:9]1[C@H:8]([NH2:7])[CH2:13][CH2:12][N:11]([CH3:14])[CH2:10]1Tert-butyl((3R,4R)-3-methoxy-1-methyl-piperidin-4-yl)-carbamate (3.01 g) is combined with HCl (4 molar in dioxane, 25 mL). After 1 h the reaction mixture is freed from the solvent in vacuo and used in the next step without any further purification.
読み込み中…