HCID 19610831, compound → HCID 19610859, compound

Participants

Reaction Steps

850 mg (2.66 mmol) of 2-(3-chloro-2-pyridylamino)-3-chloro-1,4-dihydro-1,4-dioxonaphthalene in solution in 80 mL of glycerol is brought to 190° C. for 20 min. After complete cooling, the yellow precipitate obtained is filtered on fritted glass, washed w-th distilled water, and recrystallized in methanol after decoloration with animal black to produce 300 mg of 4-chloro-6,11-dihydro-6,11-dioxo-naptho[2',3':4,5]imidazo[1,2-a]pyridine in the form of yellow crystals.

Provenance & Evidence