1,3-Diphenylisobenzofuran → 3-Bromo-7,12-diphenylbenzo[k]fluoranthene

Participants

Reaction Steps

200 ml of xylene were added to 5-bromoacenaphthylene (14.5 g, 62.8 mmol) and diphenylisobenzofuran (17.1 g, 63.3 mmol) and the mixture was stirred under reflux of xylene for 5 hours. After the mixture was cooled to room temperature, the solvent was distilled off. Then, 26 ml of trifluoroacetic anhydride and 260 ml of chloroform were added thereto, followed by stirring under reflux for 1 hour. After the mixture was cooled to room temperature, the solvent was distilled off. The obtained residue was purified by silica gel chromatography (mobile phase; toluene:heptane=1:3), whereby 16 g of 4-bromo-7,12-diphenylbenzo[k]fluoranthene were obtained as a yellow solid.

Provenance & Evidence