Benzoyl chloride → Benzo[b]thiophen-4-yl benzoate

Beteiligte Stoffe

Reaktionsschritte

A mixture of benzo[b]thiophen-4-ol (4 g), benzoyl chloride (3.3 ml) and pyridine (10 ml) was heated under reflux under nitrogen for 3 hours, then cooled to ambient temperature and poured onto ice-water (130 ml). The product was extracted into ether (3×50 ml), the combined extracts were washed with 5% aqueous sodium hydrogencarbonate solution (50 ml), 2M hydrochloric acid (50 ml) and water (3×50 ml), then they were dried (MgSO4) and the solvent was removed in vacuo to give benzo[b]thiophen-4-yl benzoate (6.7 g) as a cream solid which was used without further purification.

Herkunft & Nachweise