Boron tribromide → HCID 66717073, compound

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Reaction Steps

The obtained 3,6-bis(5-methylthiophen-2-yl)-9-(4-methoxyphenyl)carbazole (3.73 g, 8.0 mmol) was dissolved in methylene chloride (30 mL). 1M Methylene chloride solution of boron tribromide (8 mL) was added dropwise to the resultant solution at −10° C., followed by stirring at room temperature. Next, the resultant mixture was washed with water and dried and the solvent was evaporated, to thereby obtain a gray solid. The obtained solid was purified through silica gel column chromatography using as an eluent a solvent mixture of methylene chloride/hexane (4/1 by volume), to thereby obtain 3.47 g of 3,6-bis(5-methylthiophen-2-yl)-9-(4-hydroxyphenyl)carbazole.

Provenance & Evidence