Trimellitic anhydride → HCID 21884647, compound

Participants

Reaction Steps

Prepared by the method of Example 1b), from 2-(3-amino-4-methoxyphenyl)-5-(4-ethylsulfonylphenyl)benzoxazole (63 mg, 0.15 mmol) and 1,2,4-benzenetricarboxylic anhydride (29 mg, 0.15 mmol) the title compound was obtained (34 mg, 39%). 1H NMR (DMSO) δ 8.57(dd, 1H), 8.57(m, 4H), 8.30(d, 1H) 8.10(m, 4H), 8.03(d, 1H), 7.92(dd, 1H), 7.61(d, 1H), 4.00(s, 3H), 3.45(q, 2H), 1.25(t, 3H). MS 583 m/z (M+H)+.

Provenance & Evidence