Cyclohexylamine → 1-(4-Fluorobenzyl)-4-hydroxy-6-methyl-2-oxo-1,2-dihydro-quinoline-3-carboxylic acid cyclohexylamide

HRID 346591Notes

Reaction equation

HRID 346591 reaction equation
[CH:1]1([NH2:7])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.C([O:10][C:11]([C:13]1[C:14](=[O:33])[N:15]([CH2:25][C:26]2[CH:31]=[CH:30][C:29]([F:32])=[CH:28][CH:27]=2)[C:16]2[C:21]([C:22]=1[OH:23])=[CH:20][C:19]([CH3:24])=[CH:18][CH:17]=2)=O)C>C1(C)C=CC=CC=1.O>[CH:1]1([NH:7][C:11]([C:13]2[C:14](=[O:33])[N:15]([CH2:25][C:26]3[CH:31]=[CH:30][C:29]([F:32])=[CH:28][CH:27]=3)[C:16]3[C:21]([C:22]=2[OH:23])=[CH:20][C:19]([CH3:24])=[CH:18][CH:17]=3)=[O:10])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1

Participants

5

Reactant 2

HCID 7965CyclohexylamineHCID 694780414-Fluoro-benzyl-4-hydroxy-6-methyl-2-oxo-1,2-dihydro-quinoline-3-carboxylic acid ethyl ester

Product 1

HCID 694790651-(4-Fluorobenzyl)-4-hydroxy-6-methyl-2-oxo-1,2-dihydro-quinoline-3-carboxylic acid cyclohexylamideYield 93%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 1140TolueneSolvent

Procedure

Cyclohexylamine (3.22 mL, 28.14 mmol) was added to a solution of Compound 16 (5.0 g, 14.07 mmol) in toluene (50 mL) and refluxed for 4 h. The solution was cooled and the solvent was evaporated under vacuum. The residue obtained was suspended in water, briefly sonicated, and filtered. The crude product was recrystallized by ether to yield 5.3 g (93%) of yellow solids. M.P. 156° C. 1H NMR (DMSO-d6): δ 1.24 (m, 1H), 1.37 (m, 4H), 1.57 (m, 1H), 1.68 (m, 2H), 1.88 (m, 2H), 2.36 (s, 3H), 3.87 (m, 1H), 5.49 (s, 2H), 7.11 (m, 2H), 7.22 (m, 2H), 7.36 (d, J=8.7 Hz, 1H), 7.51 (dd, J=1.6, 8.7 Hz, 1H), 7.90 (d, J=1.6 Hz, 1H), 10.39 (s, 1H). EIMS m/z 409 (M+1), 431 (M+23).

Workup

  1. temperaturerefluxed for 4 h
  2. temperatureThe solution was cooled
  3. customthe solvent was evaporated under vacuum
  4. customThe residue obtained
  5. custombriefly sonicated
  6. filtrationfiltered
  7. customThe crude product was recrystallized by ether

Sources & evidence

ORD record
ord-89a704d64ba84014afea9c3f10bf4147
Source dataset
uspto-grants-2007_02
Patent number
US07173036B2

Reaction notes

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