Trimellitic anhydride → 2-[3-(Naphth[2,3-d]oxazol-2-yl)phenyl]-2,3-dihydro-1,3-dioxo-1h-isoindole-5-carboxylic acid

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Reaction Steps

Prepared by the method of Example 1b), from 2-(3-aminophenyl)naphth[2,3-d]oxazole (36 mg, 0.14 mmol) and 1,2,4-benzenetricarboxylic anhydride (30 mg, 0.16 mmol) the title compound was obtained, 30 mg (44%). 1H NMR (DMSO) δ 8.45(m, 2H), 8.38(d, 3H), 8.30(s, 1H), 8.12(m, 3H), 7.82(m, 2H), 7.55(m, 2H). MS 433 m/z (M−H)−.

Provenance & Evidence