Acetonitrile → N-(4-cyclohexen-1-yl-2-methyl-phenyl)-4-oxo-1H-quinoline-3-carboxamide

HRID 1915518

Reaction equation

HRID 1915518 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]([NH:8][C:9]([C:11]2[C:20](=[O:21])[C:19]3[C:14](=[CH:15][CH:16]=[CH:17][CH:18]=3)[NH:13][CH:12]=2)=[O:10])=[C:4]([CH3:22])[CH:3]=1.[C:23]1(B(O)O)[CH2:28][CH2:27][CH2:26][CH2:25][CH:24]=1.C([O-])([O-])=O.[Na+].[Na+].C(#N)C>C(OCC)(=O)C>[C:23]1([C:2]2[CH:7]=[CH:6][C:5]([NH:8][C:9]([C:11]3[C:20](=[O:21])[C:19]4[C:14](=[CH:15][CH:16]=[CH:17][CH:18]=4)[NH:13][CH:12]=3)=[O:10])=[C:4]([CH3:22])[CH:3]=2)[CH2:28][CH2:27][CH2:26][CH2:25][CH:24]=1

Participants

6

Reactant 4

HCID 6342AcetonitrileHCID 10340Sodium CarbonateHCID 38629021-Cyclohexenylboronic acidHCID 59410081N-(4-bromo-2-methyl-phenyl)-4-oxo-1H-quinoline-3-carboxamide

Product 1

HCID 68463548N-(4-cyclohexen-1-yl-2-methyl-phenyl)-4-oxo-1H-quinoline-3-carboxamideYield 70%

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Conditions

Temperature
150 °C

Procedure

To N-(4-bromo-2-methyl-phenyl)-4-oxo-1H-quinoline-3-carboxamide (50 mg, 0.14 mmol), cyclohexen-1-ylboronic acid (35 mg, 0.28), and Pd(dppf)C12-DCM (11 mg, 0.01 mmol) was added Na2CO3 (980 μL of 2 M, 1.96 mmol) and acetonitrile (2 mL). The reaction mixture was heated under microwave irradiation for 10 min at 150° C. under a N2 atmosphere. The reaction mixture was diluted with ethyl acetate, washed with 50% saturated sodium bicarbonate solution (2×20 mL), water, and brine. The organic layer was dried over anhydrous Na2SO4, filtered, and concentrated in vacuo. The crude product was purified via silica gel column chromatography (30-100% ethyl acetate/hexane) to obtain N-(4-cyclohexen-1-yl-2-methyl-phenyl)-4-oxo-1H-quinoline-3-carboxamide as a white solid (35 mg, 70%). N-(4-cyclohexen-1-yl-2-methyl-phenyl)-4-oxo-1H-quinoline-3-carboxamide (35 mg, 0.10 mmol) was stirred vigorously with 10% Pd/C (wet) (30 mg, 0.01 mmol) under an atmosphere of H2 for 30 min at 50° C. The reaction mixture was filtered, concentrated in vacuo, and purified by HPLC (30-95% CH3CN/5 mM HCl) to yield N-(4-cyclohexyl-2-methylphenyl)-4-oxo-1,4-dihydroquinoline-3-carboxamide (20 mg, 57% yield). LC/MS m/z 361.4 [M+H]+. 1H NMR (400.0 MHz, DMSO-d6) δ 12.94 (d, J=6.0 Hz, 1H), 12.24 (s, 1H), 8.89 (d, J=6.5 Hz, 1H), 8.35 (d, J=7.7 Hz, 1H), 8.22 (d, J=8.3 Hz, 1H), 7.82 (t, J=7.6 Hz, 1H), 7.76 (d, J=7.8 Hz, 1H), 7.55-7.51 (m, J=7.6 Hz, 1H), 7.11 (s, 1H), 7.05 (d, J=8.4 Hz, 1H), 2.45 (m, 1H), 2.38 (s, 3H), 1.80-1.69 (m, 5H), 1.42-1.21 (m, 5H).

Workup

  1. washwashed with 50% saturated sodium bicarbonate solution (2×20 mL), water, and brine
  2. dry with materialThe organic layer was dried over anhydrous Na2SO4
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. customThe crude product was purified via silica gel column chromatography (30-100% ethyl acetate/hexane)

Sources & evidence

ORD record
ord-7cead7f256a34d3c80caa42c66e2d179
Source dataset
uspto-grants-2013_12
Patent number
US08614327B2

Linked notes

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