Water → Ethyl 2-(4-fluorophenyl)-3-methyl-3-(1-methyl-1H-imidazol-2-yl)-4-oxo-1,2,3,4-tetrahydroquinoline-5-carboxylate

HRID 1968153Notes

Reaction equation

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

Participants

Conditions

Temperature: 0 °C

Procedure

To a solution of ethyl 2-(4-fluorophenyl)-3-(1-methyl-1H-imidazol-2-yl)-4-oxo-1,2,3,4-tetrahydroquinoline-5-carboxylate (150 mg, 0.38 mmol) and cesium carbonate (268 mg, 0.76 mmol) in DMF (10 mL) was added iodomethane (0.2 mL, 2.28 mmol) at 0° C. under N2. The reaction mixture was stirred at 0° C. for 4 h and then at room temperature overnight. The resulting solution was added 50 mL of water, and then extracted with ethyl acetate (100 mL×3). The extracts were concentrated to give the crude product as a yellow solid (145 mg, yield 90%), which was used in the next step without further purification. LC-MS (ESI) m/z: 408 (M+1)+.

Workup

customat room temperature
customovernight
extractionextracted with ethyl acetate (100 mL×3)
concentrationThe extracts were concentrated

Sources & evidence

ORD record: ord-43181575101049558e4ffe1c83f3bc65
Source dataset: uspto-grants-2013_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08420650B2

Reaction notes

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