Water → 1-[2-(Acetylamino)ethyl]-7-[(4-fluorophenyl)methyl]-4-hydroxy-N-(2-hydroxyethyl)-2-oxo-1,2-dihydro-1,5-naphthyridine-3-carboxamide

HRID 2364337Notes

Reaction equation

HRID 2364337 reaction equation
[NH2:1][CH2:2][CH2:3][N:4]1[C:13]2[C:8](=[N:9][CH:10]=[C:11]([CH2:14][C:15]3[CH:20]=[CH:19][C:18]([F:21])=[CH:17][CH:16]=3)[CH:12]=2)[C:7]([OH:22])=[C:6]([C:23]([NH:25][CH2:26][CH2:27][OH:28])=[O:24])[C:5]1=[O:29].C(N(C(C)C)CC)(C)C.[C:39](OC(=O)C)(=[O:41])[CH3:40].O>CN(C=O)C>[C:39]([NH:1][CH2:2][CH2:3][N:4]1[C:13]2[C:8](=[N:9][CH:10]=[C:11]([CH2:14][C:15]3[CH:16]=[CH:17][C:18]([F:21])=[CH:19][CH:20]=3)[CH:12]=2)[C:7]([OH:22])=[C:6]([C:23]([NH:25][CH2:26][CH2:27][OH:28])=[O:24])[C:5]1=[O:29])(=[O:41])[CH3:40]

Participants

6

Reactant 4

HCID 962WaterHCID 7918Acetic AnhydrideHCID 81531DiisopropylethylamineHCID 694804131-(2-Aminoethyl)-7-[(4-fluorophenyl)methyl]-4-hydroxy-N-(2-hydroxyethyl)-2-oxo-1,2-dihydro-1,5-naphthyridine-3-carboxamide

Product 1

HCID 694801751-[2-(Acetylamino)ethyl]-7-[(4-fluorophenyl)methyl]-4-hydroxy-N-(2-hydroxyethyl)-2-oxo-1,2-dihydro-1,5-naphthyridine-3-carboxamide

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
0 °C

Procedure

A solution of 1-(2-aminoethyl)-7-[(4-fluorophenyl)methyl]-4-hydroxy-N-(2-hydroxyethyl)-2-oxo-1,2-dihydro-1,5-naphthyridine-3-carboxamide (0.019 g, 0.047 mmol) and diisopropyl ethylamine (0.075 mL, 0.43 mmol) in DMF (1 mL) under nitrogen was treated with acetic anhydride (0.004 mL, 0.042 mmol) at ambient temperature. The reaction was warmed slightly to solubilize then reacted at ambient temperature for 10 min. Water was added (2 mL) and the reaction was cooled to 0° C. and concentrated in vacuo. The resulting residue was treated with 1 N NaHSO4 and filtered then triturated with Et2O and dried in air to provide the title compound as an off-white solid: 1H NMR (300 MHz, DMSO-D6) δ ppm 1.7 (s, 3 H), 3.3 (dd, J=3.1, 1.3 Hz, 2 H), 3.4 (m, 2 H), 3.6 (m, 2 H), 4.1 (s, 2 H), 4.3 (m, 2 H), 4.9 (t, J=4.8 Hz, 1 H), 7.1 (t, J=8.8 Hz, 2 H), 7.4 (m, 2 H), 8.0 (m, 1 H), 8.2 (s, 1 H), 8.5 (s, 1 H), 10.4 (d, J=6.2 Hz, 1 H), 17.2 (s, 1 H); ES+ MS: 443 (M+H+).

Workup

  1. temperatureThe reaction was warmed slightly
  2. customto solubilize then reacted at ambient temperature for 10 min
  3. concentrationconcentrated in vacuo
  4. additionThe resulting residue was treated with 1 N NaHSO4
  5. filtrationfiltered
  6. customthen triturated with Et2O
  7. customdried in air

Sources & evidence

ORD record
ord-db9c537fa59b4be0b497b7198e22362a
Source dataset
uspto-grants-2014_04
Patent number
US08691991B2

Reaction notes

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