Dibenzofuran → 2-Bromodibenzofuran

Participants

Reaction Steps

150 g (892 mmol) of dibenzofuran and 1 L of acetic acid were loaded into a flask. Air in the flask was replaced with nitrogen, and dibenzofuran was dissolved in acetic acid under heat. 188 g (1.18 mol) of bromine were dropped to the solution while the solution was sometimes cooled with water. After that, the mixture was stirred for 20 hours while being cooled with air. The precipitated crystal was separated by filtration, washed with acetic acid and water in the stated order, and dried under reduced pressure. The resultant crystal was purified by distillation under reduced pressure. After that, the resultant was repeatedly recrystallized with methanol several times, whereby 66.8 g of 2-bromodibenzofuran were obtained (31% yield).

Provenance & Evidence