2-Aminophenol → HCID 86609052, compound

Participants

Reaction Steps

An Erlenmeyer flask equipped with magnetic stirrer and oil bath for heating is charged with 5.0 g (0.046 mole) of o-aminophenol and 100 ml of dimethylformamide. The charge is stirred to dissolve o-aminophenol and 6.0 g (0.02 mole) of 6-fluoro-2-[2-(5-nitro-2-furyl)vinyl]-4-chloroquinazoline (IV) added. The reaction mixture is reacted at 80° to 90° C. for 2 hours to form an organic precipitate; 100 ml of water is added to the warm mixture which is then allowed to cool and placed overnight in a refrigerator to crystallize. The solids are collected, washed with methanol and dried to obtain 7.5 g of brown-tan solid. A solution of the product in 100 ml of dimethylformamide is treated with activated carbon and filtered. A first portion of 75 ml of methanol is added to the warm filtrate then an additional 25 ml portion. Cooling and scratching gives 5.5 g of orange crystals of the purified product.

Provenance & Evidence