Sodium Hydroxide → HCID 59529523, compound

HRID 1877289Notes

Reaction equation

HRID 1877289 reaction equation
[CH:1]1([CH:7]([NH:20][C:21]2[CH:22]=[CH:23][C:24]([C:27](O)=[O:28])=[N:25][CH:26]=2)[C:8]2[CH:12]=[C:11]([C:13]3[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=3)[S:10][C:9]=2[CH3:19])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.Cl.[NH2:31][CH2:32][CH2:33][C:34]([O:36]CC)=[O:35].O.ON1C2C=CC=CC=2N=N1.Cl.C(N=C=NCCCN(C)C)C.[Cl-].[NH4+].[OH-].[Na+]>C(O)C.O1CCCC1.CN(C)C=O.C(N(CC)CC)C>[CH:1]1([CH:7]([NH:20][C:21]2[CH:22]=[CH:23][C:24]([C:27]([NH:31][CH2:32][CH2:33][C:34]([OH:36])=[O:35])=[O:28])=[N:25][CH:26]=2)[C:8]2[CH:12]=[C:11]([C:13]3[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=3)[S:10][C:9]=2[CH3:19])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1

Participants

11

Reactant 6

HCID 14798Sodium HydroxideHCID 25517Ammonium ChlorideHCID 458475beta-Alanine, ethyl ester, hydrochlorideHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 27960291-Hydroxybenzotriazole hydrateHCID 68513423HCID 68513423, compound

Product 1

HCID 59529523HCID 59529523, compoundYield 69%

Reagents, catalysts & solvents 4

HCID 702EthanolSolventHCID 6228DimethylformamideSolventHCID 8028TetrahydrofuranSolventHCID 8471TriethylamineSolvent

Procedure

To a mixture of 5-{[cyclohexyl(2-methyl-5-phenylthiophen-3-yl)methyl]amino}pyridine-2-carboxylic acid (386 mg) synthesized above, ethyl β-alaninate hydrochloride (218 mg), 1-hydroxybenzotriazole monohydrate (218 mg), triethylamine (397 μL) and N,N-dimethylformamide (10 mL) was added 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (272 mg), and the mixture was stirred at room temperature overnight. Saturated aqueous ammonium chloride solution was added to quench the reaction, and the mixture was extracted with ethyl acetate. The extract was washed with saturated aqueous sodium hydrogen carbonate solution and saturated brine, dried over magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel chromatography (30-50% ethyl acetate/hexane) to give a white solid. To a mixture of the obtained solid, tetrahydrofuran (5 mL) and ethanol (5 mL) was added 1N aqueous sodium hydroxide solution (2.00 mL), and the mixture was stirred at room temperature for 2 hr. The reaction mixture was concentrated under reduced pressure. The residue was dissolved in water (10 mL), and 1N hydrochloric acid (2.00 mL) was added at 0° C. The resulting precipitate was collected by filtration to give the title compound (311 mg, 69%) as a white solid.

Workup

  1. customto quench
  2. customthe reaction
  3. extractionthe mixture was extracted with ethyl acetate
  4. washThe extract was washed with saturated aqueous sodium hydrogen carbonate solution and saturated brine
  5. dry with materialdried over magnesium sulfate
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by silica gel chromatography (30-50% ethyl acetate/hexane)
  8. customto give a white solid
  9. stirringthe mixture was stirred at room temperature for 2 hr
  10. concentrationThe reaction mixture was concentrated under reduced pressure
  11. dissolutionThe residue was dissolved in water (10 mL)
  12. addition1N hydrochloric acid (2.00 mL) was added at 0° C
  13. filtrationThe resulting precipitate was collected by filtration

Sources & evidence

ORD record
ord-a1779a8a11854190b792a5964db9d2aa
Source dataset
uspto-grants-2012_11
Patent number
US08309580B2

Reaction notes

Loading…