Trimellitic anhydride → HCID 21884651, compound

HRID 722488Notes

Reaction equation

[NH2:1][C:2]1[CH:3]=[C:4]([C:9]2[O:10][C:11]3[CH:17]=[CH:16][CH:15]=[C:14](C4C=CC=CC=4)[C:12]=3[N:13]=2)[CH:5]=[CH:6][C:7]=1[CH3:8].[CH:24]1[C:29]([C:30]([OH:32])=[O:31])=[CH:28][C:27]2[C:33]([O:35][C:36](=[O:37])[C:26]=2[CH:25]=1)=O>>[CH3:8][C:7]1[CH:6]=[CH:5][C:4]([C:9]2[O:10][C:11]3[CH:17]=[CH:16][C:15]([C:2]4[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=4)=[CH:14][C:12]=3[N:13]=2)=[CH:3][C:2]=1[N:1]1[C:33](=[O:35])[C:27]2[C:26](=[CH:25][CH:24]=[C:29]([C:30]([OH:32])=[O:31])[CH:28]=2)[C:36]1=[O:37]

Participants

Reactant 2

HCID 11089Trimellitic anhydride

HCID 21884407HCID 21884407, compound

Product 1

HCID 21884651HCID 21884651, compound

Procedure

Prepared by the method of Example 1b), from 2-(3-amino-4-methylphenyl)-4-phenylbenzoxazole (167 mg, 0.9 mmol) and 1,2,4-benzenetricarboxylic anhydride (250 mg, 0.9 mmol) the title compound was obtained, 340 mg (82%). 1H NMR (DMSO) δ 8.45(dd, 1H), 8.34(d, 2H), 8.26(dd, 1H), 8.13(d, 1H), 8.05(d, 1H), 7.85(d, 1H), 7.73(m, 4H), 7.50(t, 1H), 7.39(t, 1H), 2.28(s, 3H). MS 473 m/z (M−H)−.

Sources & evidence

ORD record: ord-538e3a70a34b443299d98deca328f41f
Source dataset: uspto-grants-2006_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07138425B2

Reaction notes

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