Triethylamine → Methyl 4-(3-(1-acetylpiperazin-4-yl)anilino)-3-nitrobenzoate

HRID 49820

Reaction equation

Cl[C:2]1[CH:11]=[CH:10][C:5]([C:6]([O:8][CH3:9])=[O:7])=[CH:4][C:3]=1[N+:12]([O-:14])=[O:13].[C:15]([N:18]1[CH2:23][CH2:22][N:21]([C:24]2[CH:25]=[C:26]([CH:28]=[CH:29][CH:30]=2)[NH2:27])[CH2:20][CH2:19]1)(=[O:17])[CH3:16].C(N(CC)CC)C>CN1C(=O)CCC1>[C:15]([N:18]1[CH2:19][CH2:20][N:21]([C:24]2[CH:25]=[C:26]([CH:28]=[CH:29][CH:30]=2)[NH:27][C:2]2[CH:11]=[CH:10][C:5]([C:6]([O:8][CH3:9])=[O:7])=[CH:4][C:3]=2[N+:12]([O-:14])=[O:13])[CH2:22][CH2:23]1)(=[O:17])[CH3:16]

Participants

Conditions

Temperature: 80 °C

Procedure

To a solution of methyl 4-chloro-3-nitrobenzoate (2.0 g, 9.28 mmol) in anhydrous NMP (5 ml) was added 2d (2.03 g, 9.28 mmol) and triethylamine (1.3 ml, 9.28 mmol). The mixture was heated with stirring to 80° C. overnight. The cooled solution was poured into ice-water (50 ml) and the resulting mixture was extracted with ethyl acetate (3×10 ml). The combined organic extracts were washed with water, dried over sodium sulfate and evaporated to dryness. The residue was triturated with petroleum ether to yield methyl 4-(3-(1-acetylpiperazin-4-yl)anilino)-3-nitrobenzoate (3.14 g, 85%) as red crystals.

Workup

temperatureThe mixture was heated
extractionthe resulting mixture was extracted with ethyl acetate (3×10 ml)
washThe combined organic extracts were washed with water
dry with materialdried over sodium sulfate
customevaporated to dryness
customThe residue was triturated with petroleum ether

Sources & evidence

ORD record: ord-d28c7b02f5b34d5cb4e0639f13bf4dc5
Source dataset: uspto-grants-2004_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06710044B2

Linked notes

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