Picolinic acid → HCID 18538941, compound

HRID 1394362Notes

Reaction equation

HRID 1394362 reaction equation
[CH2:1]([CH:8]1[CH2:13][CH2:12][N:11]([CH2:14][CH2:15][CH2:16][N:17]([C:26]2[CH:31]=[CH:30][C:29]([Cl:32])=[C:28]([Cl:33])[CH:27]=2)[C:18]([CH:20]2[CH2:25][CH2:24][NH:23][CH2:22][CH2:21]2)=[O:19])[CH2:10][CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[N:34]1[CH:39]=[CH:38][CH:37]=[CH:36][C:35]=1[C:40](O)=[O:41].Cl.CN(C)CCCN=C=NCC>CN(C=O)C>[CH2:1]([CH:8]1[CH2:13][CH2:12][N:11]([CH2:14][CH2:15][CH2:16][N:17]([C:26]2[CH:31]=[CH:30][C:29]([Cl:32])=[C:28]([Cl:33])[CH:27]=2)[C:18]([CH:20]2[CH2:21][CH2:22][N:23]([C:40]([C:35]3[CH:36]=[CH:37][CH:38]=[CH:39][N:34]=3)=[O:41])[CH2:24][CH2:25]2)=[O:19])[CH2:10][CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 1018Picolinic acidHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 18538605HCID 18538605, compound

Product 1

HCID 18538941HCID 18538941, compoundYield 91.2%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To the solution of the compound obtained in Example 66 (391 mg, 0.80 mmol), picolinic acid (108 mg, 0.88 mmol) and 1-hydroxbenzotriazole (119 mg, 0.88 mmol) in DMF (8 mL) was added 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (307 mg, 1.60 mmol), and the mixture was stirred at room temperature for 20 hours. The reaction mixture was concentrated under reduced pressure, and to the concentrate were added a saturated aqueous solution of sodium hydrogen carbonate (15 mL) and water (5 mL). The mixture was extracted with ethyl acetate (15 mL×5). The organic layer was washed with a saturated aqueous solution of sodium hydrogen carbonate (5 mL×3), saturated sodium chloride solution (5 mL), successively, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The concentrate was subjected to column chromatography (silica gel 10 g, ethyl acetate/methanol=1/0 to 9/1), and the desired fraction was concentrated under reduced pressure to give the titled compound (433 mg, 0.73 mmol, Yield 91%).

Workup

  1. concentrationThe reaction mixture was concentrated under reduced pressure
  2. additionto the concentrate were added a saturated aqueous solution of sodium hydrogen carbonate (15 mL) and water (5 mL)
  3. extractionThe mixture was extracted with ethyl acetate (15 mL×5)
  4. washThe organic layer was washed with a saturated aqueous solution of sodium hydrogen carbonate (5 mL×3), saturated sodium chloride solution (5 mL)
  5. dry with materialsuccessively, dried over anhydrous sodium sulfate
  6. concentrationconcentrated under reduced pressure
  7. concentrationthe desired fraction was concentrated under reduced pressure

Sources & evidence

ORD record
ord-7430a90d04a045d793c27762d18f2fc3
Source dataset
uspto-grants-2008_03
Patent number
US07348324B2

Reaction notes

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