Trimellitic anhydride → HCID 58743031, compound

Participants

Reaction Steps

Prepared by the method of Example 15f), from 2-(3-amino-4-methoxyphenyl-5-[(5-methyl)thiophen-2-yl]benzoxazole (64 mg, 0.19 mmol) and 1,2,4-benzenetricarboxylic anhydride (40 mg, 0.20 mmol) the title compound was obtained (62 mg, 64%). 1H NMR (DMSO) δ 8.45(dd, 1H), 8.36–8.30(m, 3H), 8.11(d, 1H), 7.94(d, 1H), 7.77(d, 1H), 7.61(dd, 1H), 7.49(d, 1H), 7.36(d, 1H), 6.84(dd, 1H), 3.89(s, 3H), 2.50(s, 3H). MS m/z 511.1 (M+H)+.

Provenance & Evidence