Beta-Alanine → HCID 68297421, compound

HRID 919887Notes

Reaction equation

HRID 919887 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][CH:19]=[CH:18][CH:17]=1)[C:10](=[O:22])[C:9]([C:23]1[CH:28]=[CH:27][C:26]([O:29][CH3:30])=[CH:25][CH:24]=1)=[CH:8]2)=[O:4].[NH2:32][CH2:33][CH2:34][C:35]([OH:37])=[O:36].C[O-].[Na+]>>[CH2:15]([N:11]1[C:12]2[C:7](=[C:6]([OH:31])[C:5]([C:3]([NH:32][CH2:33][CH2:34][C:35]([OH:37])=[O:36])=[O:4])=[N:14][CH:13]=2)[CH:8]=[C:9]([C:23]2[CH:24]=[CH:25][C:26]([O:29][CH3:30])=[CH:27][CH:28]=2)[C:10]1=[O:22])[C:16]1[CH:17]=[CH:18][CH:19]=[CH:20][CH:21]=1

Participants

4

Reactant 3

HCID 239Beta-AlanineHCID 10942334Sodium MethoxideHCID 68297680HCID 68297680, compound

Product 1

HCID 68297421HCID 68297421, compoundYield 73.3%

Procedure

A mixture of 1-benzyl-5-hydroxy-3-(4-methoxy-phenyl)-2-oxo-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester (30 mg, 0.072 mmol), β-alanine (854 mg, 9.6 mmol) and NaOMe solution (14.4 mL, 7.2 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 about 2 with 6 M HCl, and the resulting precipitate was isolated by filtration to give 25 mg of the title compound. 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-d23d326b450e4b55849805ad85daaccc
Source dataset
uspto-grants-2016_03
Patent number
US09271970B2

Reaction notes

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