1H,3H-Naphtho(1,8-cd)pyran-1,3-dione, 6-bromo- → HCID 22623954, compound

Participants

Reaction Steps

O-tert-Butylhydroxylamine hydrochloride (3.0 g, 23.9 mmol) was added to 4-bromo-1,8-naphthalic anhydride (5.0 g, 18.0 mmol) in pyridine (30.0 mL). the mixture was refluxed for 4 hours, concentrated, and the residue suspended in water. The solid was filtered and dried to give 5.9 g of the title compound.

Provenance & Evidence