Hydrochloric Acid → 2,6-Bis(4-methoxybenzoyl)naphthalene

Beteiligte Stoffe

Reaktionsschritte

A stirred reactor comprising a 750 ml sulfonation flask, thermometer, condenser and nitrogen inlet is charged with 25.3 g (0.1 mol) of naphthalene-2,6-dicarbonyl dichloride and 32.4 g (0.2 mol) of anisole in 200 ml of nitrobenzene and, with stirring, 26.6 g (0.2 mol) of aluminium chloride are added over 15 minutes at 12°-18° C. The reaction mixture is thereafter allowed to react for 90 minutes at 40° C., then cooled to room temperature and thoroughly mixed with 1.5 liters of water containing HCl. The resultant suspension is diluted with 1.2 liters of N-methylpyrrolidone, and the mixture is heated to 130° C. The clear solution so obtained is cooled and the crystallised product is isolated by filtration. The filter residue is vacuum dried at 130° C., giving 25.9 g (65.4% of theory) of the desired product, which melts at 251° C.

Herkunft & Nachweise