Cl.[F:2][C:3]1[C:8]([F:9])=[CH:7][CH:6]=[CH:5][C:4]=1[C@H:10]1[CH2:16][N:15]2[CH:17]([CH2:20][CH3:21])[CH2:18][N:19]=[C:14]2[C@H:13]([NH:22]C(=O)OC(C)(C)C)[CH2:12][CH2:11]1>O1CCOCC1>[F:2][C:3]1[C:8]([F:9])=[CH:7][CH:6]=[CH:5][C:4]=1[C@H:10]1[CH2:16][N:15]2[CH:17]([CH2:20][CH3:21])[CH2:18][N:19]=[C:14]2[C@H:13]([NH2:22])[CH2:12][CH2:11]1Hydrochloric acid (4.0 M in dioxane; 3 mL, 12.0 mmol) was added to a solution of tert-butyl [(6S,9R)-6-(2,3-difluorophenyl)-3-ethyl-2,5,6,7,8,9-hexahydro-3H-imidazo[1,2-a]azepin-9-yl]carbamate (122 mg, 0.310 mmol) in 1,4-dioxane (3 mL). After 1 h, the reaction was concentrated to give the title compound as a bis hydrochloride salt (136 mg). MS 294.1 (M+1).
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