Trimellitic anhydride → 2-[4-Allyloxy-3-(5-phenylbenzoxazol-2-yl)phenyl]-1,3-dioxo-2,3-dihydro-1h-isoindole-5-carboxylic acid

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Reaction Steps

Prepared by the method of Example 1b), from 2-(5-amino-2-allyloxyphenyl)-5-phenylbenzoxazole (190 mg, 0.55 mmol) and 1,2,4-benzenetricarboxylic anhydride (106 mg, 0.55 mmol) the title compound was obtained (102 mg, 36%). 1H NMR (DMSO) δ 8.57(m, 1H), 8.35(dd, 1H), 8.37(s, 1H), 8.13(d, 1H), 7.94(m, 3H), 7.77(d, 1H), 7.63(m, 3H), 7.35(m, 4H), 6.04(m, 1H), 5.49(dd, 1H), 5.33(dd, 1H), 4.77(d, 2H). MS 517 m/z (M+H)+.

Provenance & Evidence