B(Br)(Br)Br.[F:5][C:6]1[C:14]2[CH2:13][CH2:12][S:11][C:10]=2[C:9]([O:15]C)=[CH:8][CH:7]=1.OC1C2N=CSC=2C=CC=1>>[F:5][C:6]1[C:14]2[CH2:13][CH2:12][S:11][C:10]=2[C:9]([OH:15])=[CH:8][CH:7]=1A BBr3 demethylation of 4-fluoro-7-methoxy-2,3-dihydrobenzo[b]thiophene similar to that described for 4-hydroxy benzothiazole affords the title compound as a brown solid 251 mg: δH (300 MHz, CDCl3) 6.57-6.48 (2H, m, ArH), 4.67 (1H, br. s, OH) and 3.43-3.23 (4H, m, SCH2CH2).
불러오는 중…