Boron tribromide → 2-Methyl-1-benzothiophen-6-OL

Participants

Reaction Steps

This material was prepared from 6-methoxy-2-methylbenzo[b]thiophene 1b (2.92 g, 16.4 mmole) by treatment with BBr3 in a manner as previously described for example 1d to give 2.51 g (93%) of a white solid. 1H NMR (DMSO-d6) δ9.43 (1H, s), 7.47 (1H, d, J=8.5 Hz), 7.14 (1H, d, J=2.2 Hz), 6.92 (1H, s), 6.78 (1H, dd, J=2.2, 8.5 Hz), 2.46 (3H, s). Anal. Calcd. for C9H8OS: C, 65.82; H, 4.91; S, 19.53. Found: C, 65.96; H, 5.11; S, 19.69.

Provenance & Evidence