Potassium Carbonate → HCID 44219888, compound

HRID 868837Notes

Reaction equation

HRID 868837 reaction equation
[OH:1][C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=2)[N:5]=[CH:4][CH:3]=1.C([O-])([O-])=O.[K+].[K+].Br[CH:19]([CH3:30])[C:20]([NH:22][C:23]1[CH:28]=[CH:27][C:26]([Cl:29])=[CH:25][CH:24]=1)=[O:21]>CN(C=O)C.O>[Cl:29][C:26]1[CH:25]=[CH:24][C:23]([NH:22][C:20](=[O:21])[CH:19]([O:1][C:2]2[C:11]3[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=3)[N:5]=[CH:4][CH:3]=2)[CH3:30])=[CH:28][CH:27]=1

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 126745972-Bromo-N-(4-chlorophenyl)propanamideHCID 178516385quinolin-4-ol

Product 1

HCID 44219888HCID 44219888, compoundYield 92%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent2×

Procedure

To a solution of 4-hydroxyquinoline (100 mg, 0.69 mmol) in anhydrous DMF under N2 was added K2CO3 (286 mg, 2.10 mmol) and a solution of 2-bromo-N-(4-chlorophenyl)propanamide (218 mg, 0.83 mmol) in DMF. The reaction mixture was stirred for 12 h at room temperature before being diluted with water (50 mL) and extracted with chloroform (3×50 mL). The combined organic extracts were dried over anhydrous MgSO4, filtered, concentrated in vacuo and purified by flash chromatography using ethyl acetate/n-hexane (a gradient of 10%) to furnish 114 (207 mg, 92% yield) as a white solid. mp. 170-172° C., 1H NMR (CDCl3, 400 MHz) δ 1.83 (d, J=6.4 Hz, 3H), 5.06 (q, J=6.8, 13.6 Hz, 1H), 6.76 (d, J=5.6 Hz, 1H), 7.28 (d, J=8.4 Hz, 2H), 7.46 (d, J=8.4 Hz, 2H), 7.61 (t, J=8.0 Hz, 1H), 7.77 (t, J=7.6 Hz, 1H), 8.09 (d, J=7.2 Hz, 1H), 8.26 (d, J=8.4 Hz, 1H), 8.76 (d, J=5.6 Hz, 1H); 13C NMR (CDCl3, 100 MHz) δ 18.72, 75.83, 102.05, 122.27, 121.32, 121.58, 126.61, 129.34, 129.60, 130.34, 130.51, 135.40, 149.74, 151.48, 159.47, 169.20; ESI-HRMS for C18H16N2O2Cl (M+H)+calcd. 327.0900. found 327.0901.

Workup

  1. extractionextracted with chloroform (3×50 mL)
  2. dry with materialThe combined organic extracts were dried over anhydrous MgSO4
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. custompurified by flash chromatography

Sources & evidence

ORD record
ord-b072e2efebf44311aeb6cc655137ff6c
Source dataset
uspto-grants-2015_03
Patent number
US08969342B2

Reaction notes

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