P-Phenylenediamine → 2-Naphthylamine

Participants

Reaction Steps

In a prior art process, 3 mols of β-naphthol and 1 mol of p-phenylenediamine were heated together at 343° C. for 1.5 hours. 1259 ppm of undesirable β-naphthylamine was formed. It is difficult to remove this much material from the desired reaction product. When the reaction was conducted at 304° C. for 4 hours, 715 ppm of β-naphthylamine were formed. The yield for this 4 hour reaction was 94.3%. When this reaction was conducted for 4 hours at 232° C. the yield was only 68.9%.

Provenance & Evidence