Methylamine → 7-(2,4-Dimethoxy-benzyl)-4-hydroxy-8-oxo-5,6,7,8-tetrahydro-[2,7]naphthyridine-3-carboxylic acid methylamide

HRID 1410779Notes

Reaction equation

HRID 1410779 reaction equation
C[O:2][C:3]([C:5]1[N:6]=[CH:7][C:8]2[C:9](=[O:27])[N:10]([CH2:16][C:17]3[CH:22]=[CH:21][C:20]([O:23][CH3:24])=[CH:19][C:18]=3[O:25][CH3:26])[CH2:11][CH2:12][C:13]=2[C:14]=1[OH:15])=O.[CH3:28][NH2:29]>CCO>[CH3:28][NH:29][C:3]([C:5]1[N:6]=[CH:7][C:8]2[C:9](=[O:27])[N:10]([CH2:16][C:17]3[CH:22]=[CH:21][C:20]([O:23][CH3:24])=[CH:19][C:18]=3[O:25][CH3:26])[CH2:11][CH2:12][C:13]=2[C:14]=1[OH:15])=[O:2]

Participants

4

Reactant 2

HCID 6329MethylamineHCID 682975387-(2,4-Dimethoxy-benzyl)-4-hydroxy-8-oxo-5,6,7,8-tetrahydro-[2,7]naphthyridine-3-carboxylic acid methyl ester

Product 1

HCID 682971637-(2,4-Dimethoxy-benzyl)-4-hydroxy-8-oxo-5,6,7,8-tetrahydro-[2,7]naphthyridine-3-carboxylic acid methylamide

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Conditions

Temperature
80 °C

Procedure

A mixture of 7-(2,4-dimethoxy-benzyl)-4-hydroxy-8-oxo-5,6,7,8-tetrahydro-[2,7]naphthyridine-3-carboxylic acid methyl ester (15 mg, 0.040 mmol) and methylamine (0.8 mL, 2M in THF) in EtOH (2 mL) was heated at 80° C. in a sealed tube for 4 h. After the mixture was cooled to r.t., solvent was evaporated in vacuo. The residue was purified by silica gel chromatography (5-80% EtOAc/hexanes+2% AcOH) to give 12 mg of the title compound as a light yellow solid. MS: (+) m/z 372.27 (M+1).

Workup

  1. temperatureAfter the mixture was cooled to r.t.
  2. customsolvent was evaporated in vacuo
  3. customThe residue was purified by silica gel chromatography (5-80% EtOAc/hexanes+2% AcOH)

Sources & evidence

ORD record
ord-4e7479560ec44916926e20d8d3587160
Source dataset
uspto-grants-2014_12
Patent number
US08921389B2

Reaction notes

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