4-Hydroxybenzoic Acid → 2,4-Dihydroxybenzoic Acid

Participants

Reaction Steps

Crystallization processes performed with hydroxybenzoic acids gave different results, for example for crystallization of saturated solutions of 4-hydroxybenzoic acid in methanol resulted in a new phase, as shown in FIG. 1. Similarly using methanol or THF, NSF were obtained with the co-formers 3-hydroxybenzoic acid (FIG. 10), 2,4-dihydroxybenzoic acid (FIG. 11), 2,5-dihydroxybenzoic acid (FIGS. 6A, 6B and 6C), 3,4-hydroxybenzoic acid (FIGS. 12A and 12B) and 3,5-hydroxybenzoic acid (FIG. 13).

Provenance & Evidence