5-Amino-1-naphthol → 4-Fluoro-N-(5-hydroxynaphthalen-1-yl)-3-nitrobenzamide

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

22.4 g of 3-nitro-4-fluorobenzoyl chloride (0.12 mols) were added dropwise at 0° C. to a suspension of 19.1 g of 5-amino-1-naphthol (0.12 mols) in 120 ml of acetonitrile and 14.2 g of N,N-dimethylaniline. The mixture was further stirred until it reached room temperature, and then heated for 30 minutes at 50° C. The yellow deposit was suction filtered and washed with acetonitrile. The deposit was dissolved in tetrahydrofurane and stirred with charcoal, filtered and the product was precipitated from the filtrate with petrol 50/75. Yield: 25.8 g=66% of the theoretical yield; mp. 235°-238° C.

Herkunft & Nachweise