4-Aminobenzoic Acid → 4-[(2-Oxo-6-{3-[(thiophene-2-carbonyl)-amino]-benzoyl}-1,2-dihydro-indol-3-ylidenemethyl)-amino]-benzoic acid

HRID 640929Notes

Reaction equation

O[CH:2]=[C:3]1[C:11]2[C:6](=[CH:7][C:8]([C:12]([C:14]3[CH:15]=[C:16]([NH:20][C:21]([C:23]4[S:24][CH:25]=[CH:26][CH:27]=4)=[O:22])[CH:17]=[CH:18][CH:19]=3)=[O:13])=[CH:9][CH:10]=2)[NH:5][C:4]1=[O:28].[NH2:29][C:30]1[CH:38]=[CH:37][C:33]([C:34]([OH:36])=[O:35])=[CH:32][CH:31]=1>C1COCC1>[O:28]=[C:4]1[C:3](=[CH:2][NH:29][C:30]2[CH:38]=[CH:37][C:33]([C:34]([OH:36])=[O:35])=[CH:32][CH:31]=2)[C:11]2[C:6](=[CH:7][C:8]([C:12](=[O:13])[C:14]3[CH:19]=[CH:18][CH:17]=[C:16]([NH:20][C:21]([C:23]4[S:24][CH:25]=[CH:26][CH:27]=4)=[O:22])[CH:15]=3)=[CH:9][CH:10]=2)[NH:5]1

Participants

Conditions

Temperature: 65 °C

Procedure

A small screw cap test tube was charged with Thiophene-2-carboxylic acid [3-(3-hydroxymethylene-2-oxo-2,3-dihydro-1H-indole-6-carbonyl)-phenyl]-amide (as prepared in Example 45, 80 mg, 0.2049 mmol) and THF (2 mL). To the resulting solution was added 4-Amino-benzoic acid (34 mg, 0.248 mmol), and the mixture was stirred for 24 h at 65° C. Subsequently, the reaction mixture was cooled to room temperature. The room temperature reaction mixture was concentrated in vacuo. The solid residue was recrystallized from EtOAc (5 mL) and Hexanes (2 mL) yielding the title compound in 81% yield (0.085 g, 0.1668 mmol).

Workup

customA small screw cap test tube
temperatureSubsequently, the reaction mixture was cooled to room temperature
customThe room temperature reaction mixture
concentrationwas concentrated in vacuo
customThe solid residue was recrystallized from EtOAc (5 mL) and Hexanes (2 mL)

Sources & evidence

ORD record: ord-aa0ae4b4c6df4b4eb72e7dd245b686fc
Source dataset: uspto-grants-2010_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07692005B2

Reaction notes

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