Hydrochloric Acid → 2,3-Dihydroxy-1-naphthaldehyde

Participants

Reaction Steps

The procedure of Production Example 3 was repeated except that phenol was replaced with 2,3-dihydroxynaphthalene, the 35% concentrated hydrochloric acid was replaced with 0.1 ml of phosphoric acid, and the reaction solution to be subjected to reflux was added with 100 g of acetone and then was heated under reflux, to give a 2,3-dihydroxynaphthalene-formaldehyde condensate.

Provenance & Evidence