Ethanol → 7H-Dibenzo(a,g)carbazole

Participants

Reaction Steps

Following the above procedure, Suzuki coupling of 3.8 g of 7-acetyl-12-bromo-7H-dibenzo [a,g]carbazole and 2.7 g of (4-benzo[d]thiazol-2-yl) phenylboronic acid were stirred together in 30 ml of toluene. To this was added 0.02 g of tetrakis(triphenylphosphine)palladium, 2.1 g of potassium carbonate and 10 ml of aqueous ethanol were added and refluxed under nitrogen for 6 h. The reaction was quenched with water and the toluene layer was removed and passed through a celite column. The organic layers were combined and then evaporated in a rotary evaporator under vacuum to yield 4.1 g of 7-acetyl-12-[4-benzo[d]thiazol-2-yl) phenyl]-7H-dibenzo[a,g]carbazole as a white solid.

Provenance & Evidence