Isonicotinic Acid → HCID 66745864, compound

HRID 2410153Notes

Reaction equation

HRID 2410153 reaction equation
[NH2:1][C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][C:10]=2[O:12][CH2:13][C:14]([NH2:17])([CH3:16])[CH3:15])[N:5]=[C:4]([CH3:18])[C:3]=1[C:19]([O:21][CH2:22][CH3:23])=[O:20].[C:24](O)(=[O:31])[C:25]1[CH:30]=[CH:29][N:28]=[CH:27][CH:26]=1.CCN=C=NCCCN(C)C.C1C=CC2N(O)N=NC=2C=1.C(N(CC)CC)C>CN(C=O)C>[NH2:1][C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][C:10]=2[O:12][CH2:13][C:14]([NH:17][C:24](=[O:31])[C:25]2[CH:30]=[CH:29][N:28]=[CH:27][CH:26]=2)([CH3:16])[CH3:15])[N:5]=[C:4]([CH3:18])[C:3]=1[C:19]([O:21][CH2:22][CH3:23])=[O:20]

Participants

7

Reactant 5

HCID 5922Isonicotinic AcidHCID 8471TriethylamineHCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 66746535HCID 66746535, compound

Product 1

HCID 66745864HCID 66745864, compoundYield 83%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of ethyl 4-amino-5-(2-amino-2-methylpropoxy)-2-methylquinoline-3-carboxylate (Example Db, 1.0 g, 3.15 mmol) in dry DMF (20 mL) was added isonicotinic acid (504 mg, 4.10 mmol), followed by EDCI (783 mg, 4.10 mmol), HOBt (554 mg, 4.10 mmol), and triethylamine (414 mg, 4.10 mmol) at room temperature under nitrogen. After it was stirred at room temperature for 12 hrs, the reaction mixture was concentrated under reduced pressure. The residue was diluted with water, and extracted with EtOAc (3×). The aqueous layer was basified with 2N NaOH to pH 8 and extracted with EtOAc (3×). The combined organic layers were washed with brine, dried over MgSO4, filtered, concentrated, and purified by chromatography on silica gel eluting with 10% MeOH in dichloromethane to give the title compound as a yellow solid (1.1 g, 83%). 1H NMR (400 MHz, DMSO-d6) δ 1.29 (t, J=4 Hz, 3H), 1.51 (s, 6H), 2.94 (s, 3H), 4.28 (q, J=4 Hz, 2H), 4.42 (s, 2H), 6.93 (dd, J=1, 8 Hz, 1H), 7.24 (dd, J=1, 8 Hz, 2H), 7.52 (t, J=8 Hz, 1H), 7.69 (dd, J=2, 4 Hz, 2H), 8.14 (s, 2H), 8.37 (s, 1H), 8.67 (dd, J=2, 4 Hz, 2H). MS 423 (MH+).

Workup

  1. concentrationthe reaction mixture was concentrated under reduced pressure
  2. additionThe residue was diluted with water
  3. extractionextracted with EtOAc (3×)
  4. extractionextracted with EtOAc (3×)
  5. washThe combined organic layers were washed with brine
  6. dry with materialdried over MgSO4
  7. filtrationfiltered
  8. concentrationconcentrated
  9. custompurified by chromatography on silica gel eluting with 10% MeOH in dichloromethane

Sources & evidence

ORD record
ord-9f4ed0d46d5e49e48a988992afe20a00
Source dataset
uspto-grants-2014_08
Patent number
US08815956B2

Reaction notes

Loading…