Beta-Alanine → HCID 68297372, compound

HRID 1410903Notes

Reaction equation

HRID 1410903 reaction equation
CO[C:3]([C:5]1[C:6]([OH:31])=[C:7]2[C:12](=[CH:13][N:14]=1)[N:11]([CH2:15][C:16]1[CH:21]=[CH:20][C:19]([O:22][CH3:23])=[CH:18][CH:17]=1)[C:10](=[O:24])[C:9]([C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1)=[CH:8]2)=[O:4].[NH2:32][CH2:33][CH2:34][C:35]([OH:37])=[O:36].C[O-].[Na+]>>[OH:31][C:6]1[C:5]([C:3]([NH:32][CH2:33][CH2:34][C:35]([OH:37])=[O:36])=[O:4])=[N:14][CH:13]=[C:12]2[C:7]=1[CH:8]=[C:9]([C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1)[C:10](=[O:24])[N:11]2[CH2:15][C:16]1[CH:17]=[CH:18][C:19]([O:22][CH3:23])=[CH:20][CH:21]=1

Participants

4

Reactant 3

HCID 239Beta-AlanineHCID 10942334Sodium MethoxideHCID 68297207HCID 68297207, compound

Product 1

HCID 68297372HCID 68297372, compoundYield 77.9%

Procedure

A mixture of 5-hydroxy-1-(4-methoxy-benzyl)-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester (35 mg, 0.084 mmol), β-alanine (750 mg, 8.4 mmol) and NaOMe solution (13 mL, 6.3 mmol, 0.5 M in MeOH) was refluxed for 16 h. After the mixture was cooled to r.t., the solvent was evaporated in vacuo. The residue was dissolved in saturated NaHCO3 and washed several times with ether. The aqueous layer was acidified to pH 2 with 6 M HCl, and the resulting precipitate was isolated by filtration to give 31 mg of the title compound as a yellow solid. MS: (+) m/z 474.30 (M+1).

Workup

  1. temperaturewas refluxed for 16 h
  2. customthe solvent was evaporated in vacuo
  3. dissolutionThe residue was dissolved in saturated NaHCO3
  4. washwashed several times with ether
  5. customthe resulting precipitate was isolated by filtration

Sources & evidence

ORD record
ord-32eff1b1e5a14bb296e1c31b6566680c
Source dataset
uspto-grants-2014_12
Patent number
US08921389B2

Reaction notes

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