4-(4-Methylpiperazin-1-yl)aniline → HCID 178463138, compound

HRID 641027Notes

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[CH:24]=[N:25][N:26]([CH2:29][CH3:30])[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:31].[CH3:32][N:33]1[CH2:38][CH2:37][N:36]([C:39]2[CH:44]=[CH:43][C:42]([NH2:45])=[CH:41][CH:40]=2)[CH2:35][CH2:34]1>C1COCC1>[CH3:32][N:33]1[CH2:34][CH2:35][N:36]([C:39]2[CH:44]=[CH:43][C:42]([NH:45][CH:2]=[C:3]3[C:11]4[C:6](=[CH:7][C:8]([C:12]([C:14]5[CH:15]=[C:16]([NH:20][C:21]([C:23]6[CH:24]=[N:25][N:26]([CH2:29][CH3:30])[C:27]=6[CH3:28])=[O:22])[CH:17]=[CH:18][CH:19]=5)=[O:13])=[CH:9][CH:10]=4)[NH:5][C:4]3=[O:31])=[CH:41][CH:40]=2)[CH2:37][CH2:38]1

Participants

Conditions

Temperature: 65 °C

Procedure

A small screw cap test tube was charged with 1-Ethyl-5-methyl-1H-pyrazole-4-carboxylic acid [3-(3-hydroxymethylene-2-oxo-2,3-dihydro-1H-indole-6-carbonyl)-phenyl]-amide (prepared below, 192 mg, 0.4611 mmol) and THF (4.6 mL). To the resulting solution was added 4-(4-methyl-piperazin-1-yl)-phenylamine (87.9 mg, 0.46 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 16% yield (0.041 g, 0.072 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-9fbce20cd65641f2b0aab36366fab7d6
Source dataset: uspto-grants-2010_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07692005B2

Reaction notes

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