[Br:1][C:2]1[CH:19]=[CH:18][C:17]([F:20])=[CH:16][C:3]=1[O:4][CH:5]1[CH2:8][N:7](C(OC(C)(C)C)=O)[CH2:6]1.[ClH:21]>O1CCOCC1>[ClH:21].[Br:1][C:2]1[CH:19]=[CH:18][C:17]([F:20])=[CH:16][C:3]=1[O:4][CH:5]1[CH2:8][NH:7][CH2:6]1To tert-butyl 3-(2-bromo-5-fluorophenoxy)azetidine-1-carboxylate (2.28 g, 6.59 mmol) in dioxane (40 mL) was added 4 M HCl in dioxane (4.49 mL, 19.8 mmol). After a period of 18 h, the white solid was filtered and washed with cold dioxane to give the title compound.
Wird geladen…