Formaldehyde → HCID 22623921, compound

Participants

Reaction Conditions

Reaction Steps

Paraformaldehyde (16.0 g, 530.0 mmol) and concentrated sulfuric acid (80 mL) were added to a suspension of 3-hydroxy-1,8-naphthalic anhydride (10.24 g, 48.0 mmol) in dioxane (500 mL). The mixture was heated to 80° C. for 2 hours under stirring. After cooling, the reaction mixture was poured into ice water (1000 mL). The precipitate was filtered and dried to give 12.0 g of the title compound.

Provenance & Evidence