[Br:1][C:2]1[CH:7]=[CH:6][C:5]([OH:8])=[CH:4][CH:3]=1.C([O-])([O-])=O.[K+].[K+].CC1C=CC(S(O[CH:26]2[CH2:29][O:28][CH2:27]2)(=O)=O)=CC=1>CN(C=O)C.CCOC(C)=O>[Br:1][C:2]1[CH:7]=[CH:6][C:5]([O:8][CH:26]2[CH2:29][O:28][CH2:27]2)=[CH:4][CH:3]=14-Bromophenol (2.5 g, 14.5 mmol) and K2CO3 (5.45 g, 39.4 mmol) were added to a solution of oxetan-3-yl 4-methylbenzenesulfonate (3.00 g, 13.1 mmol) in DMF (10 mL) in a sealed tube. The reaction was heated to 100° C. and stirred at this temperature for 24 h. The reaction was diluted with EtOAc and washed with water. The organic layer was dried (MgSO4), filtered and concentrated to afford the title compound. MS (GCMS) m/z 228. This material was used in subsequent steps without further purification.
Loading…
