Methanol → 2-(4-Methoxyphenyl)benzothiophene-6-OL

Participants

Reaction Conditions

Reaction Steps

2-(4-Methoxyphenyl)-6-isopropoxybenzo[b]thiophene (1.0 g, 3.35 mmol) was dissolved in 10 mL of methylene chloride and warmed to 30° C. Boron trichloride (3.685 mL, 3.685 mmol 1M in methylene chloride) was slowly added to the stirring reaction solution. The reaction was allowed to proceed for one hour at ambient temperature. The reaction was quenched with the dropwise addition of methanol (0.536 g, 16.75 mmol). The reaction was stirred for two hours and a white precipitate formed. The solid was filtered off, was hed three times with 10 mL portions of methylene chloride and dried to yield the title compound as a white solid. EA calculated for C15H12O2S: C, 70.29; H, 4.72; S, 12.51. Found: C, 67.69; H, 4.65; S, 12.02. MS(FD): m/e=256 (M+).

Provenance & Evidence