Glycine ethyl ester, hydrochloride → HCID 21948158, compound

HRID 2183821Notes

Reaction equation

HRID 2183821 reaction equation
[NH:1]([C:8]1[N:9]([C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)[C:10]2[C:15]([C:16](=[O:18])[CH:17]=1)=[C:14](Cl)[N:13]=[C:12]([CH3:20])[CH:11]=2)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.Cl.[CH2:28]([O:30][C:31](=[O:34])[CH2:32][NH2:33])[CH3:29]>CCO>[NH:1]([C:8]1[N:9]([C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)[C:10]2[C:15]([C:16](=[O:18])[CH:17]=1)=[C:14]([NH:33][CH2:32][C:31]([O:30][CH2:28][CH3:29])=[O:34])[N:13]=[C:12]([CH3:20])[CH:11]=2)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

4

Reactant 2

HCID 2723640Glycine ethyl ester, hydrochlorideHCID 10269984HCID 10269984, compound

Product 1

HCID 21948158HCID 21948158, compoundYield 46%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

To a solution of 2-anilino-5-chloro-7-methyl-1-phenyl-1,6-naphthyridin-4(1H)-one (80 mg, 0.22 mmol) in EtOH (8 mL) was added glycine ethyl ester hydrochloride (46 mg, 0.44 mmol) and TEA (0.23 mL, 1.65 mmol). The reaction was heated at reflux for 3 d. The reaction mixture was cooled, concentrated in vacuo, diluted with water and extracted with EtOAc. The combined organic extracts were washed with water, brine, dried over Na2SO4 and concentrated in vacuo. The residue was purified by reverse-phase preparative HPLC (10% CH3CN in water with 0.1% TFA to 95% CH3CN in water, 10 mL/min, 10 min) to provide ethyl N-(2-anilino-7-methyl-4-oxo-1-phenyl-1,4-dihydro-1,6-naphthyridin-5-yl)glycinate (43 mg, 46%): LCMS RT: 2.16 min, MH+: 429.3.

Workup

  1. temperatureThe reaction was heated
  2. temperatureat reflux for 3 d
  3. temperatureThe reaction mixture was cooled
  4. concentrationconcentrated in vacuo
  5. additiondiluted with water
  6. extractionextracted with EtOAc
  7. washThe combined organic extracts were washed with water, brine
  8. dry with materialdried over Na2SO4
  9. concentrationconcentrated in vacuo
  10. customThe residue was purified by reverse-phase preparative HPLC (10% CH3CN in water with 0.1% TFA to 95% CH3CN in water, 10 mL/min, 10 min)

Sources & evidence

ORD record
ord-2d75363f88e44cb08cccc84f598da867
Source dataset
uspto-grants-2005_05
Patent number
US06900205B2

Reaction notes

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