Trimellitic anhydride → HCID 21884317, compound

Participants

Reaction Steps

Prepared by the method of Example 15f), from 2-(3-amino-6-propylaminophenyl)-6,7-difluorobenzoxazole (121 mg, 0.4 mmol) and 1,2,4-benzenetricarboxylic anhydride (96 mg, 0.5 mmol) the title compound was obtained (105 mg, 55%). 1H NMR (DMSO) δ 8.41(dd, 1H), 8.29(s, 1H), 8.25(t, 1H), 8.14(d, 1H), 8.06(d, 1H), 7.67(m, 1H), 7.50(m, 2H), 7.04(d, 1H), 3.34(m, 2H), 1.74(m, 2H), 1.05(t, 3H). MS 475.7 m/z (M−H)−.

Provenance & Evidence