4-(4-Aminophenyl)butanoic acid → 4-[4-[[6-[3-[(3-methylthiophene-2-carbonyl)amino]benzoyl]-2-oxo-1H-indol-3-ylidene]methylamino]phenyl]butanoic acid

HRID 641033Notes

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][C:27]=4[CH3:28])=[O:22])[CH:17]=[CH:18][CH:19]=3)=[O:13])=[CH:9][CH:10]=2)[NH:5][C:4]1=[O:29].[NH2:30][C:31]1[CH:36]=[CH:35][C:34]([CH2:37][CH2:38][CH2:39][C:40]([OH:42])=[O:41])=[CH:33][CH:32]=1>C1COCC1>[CH3:28][C:27]1[CH:26]=[CH:25][S:24][C:23]=1[C:21]([NH:20][C:16]1[CH:15]=[C:14]([CH:19]=[CH:18][CH:17]=1)[C:12]([C:8]1[CH:7]=[C:6]2[C:11]([C:3](=[CH:2][NH:30][C:31]3[CH:32]=[CH:33][C:34]([CH2:37][CH2:38][CH2:39][C:40]([OH:42])=[O:41])=[CH:35][CH:36]=3)[C:4](=[O:29])[NH:5]2)=[CH:10][CH:9]=1)=[O:13])=[O:22]

Participants

Conditions

Temperature: 65 °C

Procedure

A small screw cap test tube was charged with 3-Methyl-thiophene-2-carboxylic acid [3-(3-hydroxymethylene-2-oxo-2,3-dihydro-1H-indole-6-carbonyl)-phenyl]-amide (as prepared in Example 352, 200 mg, 0.4945 mmol) and THF (5.0 mL). To the resulting solution was added 4-(4-Amino-phenyl)-butyric acid (88.6 mg, 0.494 mmol), and the mixture was stirred for 24 h at 65° C. Subsequently, the reaction mixture was cooled to room temperature and concentrated in vacuo. The crude residue was purified by flash silica gel chromatography (CHCl3:MeOH mix eluant with gradient of 1% MeOH to 15% MeOH) to afford the title compound in 43% yield (0.120 g, 0.212 mmol).

Workup

customA small screw cap test tube
temperatureSubsequently, the reaction mixture was cooled to room temperature
concentrationconcentrated in vacuo
customThe crude residue was purified by flash silica gel chromatography (CHCl3:MeOH mix eluant with gradient of 1% MeOH to 15% MeOH)

Sources & evidence

ORD record: ord-88bb3ec3b0f24e1796b19d87697bd6e6
Source dataset: uspto-grants-2010_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07692005B2

Reaction notes

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