1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → 2-Anilino-N-methoxy-N,7-dimethyl-4-oxo-1-phenyl-1,4-dihydro-1,6-naphthyridine-5-carboxamide

HRID 1839419Notes

Reaction equation

HRID 1839419 reaction equation
[NH:1]([C:8]1[N:9]([C:23]2[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=2)[C:10]2[CH:11]=[C:12]([CH3:22])[N:13]=[C:14]([C:19]([OH:21])=O)[C:15]=2[C:16](=[O:18])[CH:17]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.Cl.[CH3:30][NH:31][O:32][CH3:33].C1C=CC2N(O)N=NC=2C=1.CCN=C=NCCCN(C)C>C(Cl)Cl>[NH:1]([C:8]1[N:9]([C:23]2[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=2)[C:10]2[CH:11]=[C:12]([CH3:22])[N:13]=[C:14]([C:19]([N:31]([O:32][CH3:33])[CH3:30])=[O:21])[C:15]=2[C:16](=[O:18])[CH:17]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 4

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 81138Methanamine, N-methoxy-, hydrochloride (1:1)HCID 115162342-Anilino-7-methyl-4-oxo-1-phenyl-1,4-dihydro-1,6-naphthyridine-5-carboxylic acid

Product 1

HCID 219481392-Anilino-N-methoxy-N,7-dimethyl-4-oxo-1-phenyl-1,4-dihydro-1,6-naphthyridine-5-carboxamideYield 55%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

2-anilino-7-methyl-4-oxo-1-phenyl-1,4-dihydro-1,6-naphthyridine-5-carboxylic acid (80 mg, 0.22 mmol), N,O-dimethylhydroxylamine hydrochloride (64 mg, 0.66 mmol), HOBT (89 mg, 0.66 mmol) and EDCI (126 mg, 0.66 mmol) were dissolved in CH2Cl2 (9 mL). To this solution was added TEA (120 uL, 0.88 mmol). The reaction was stirred for 1 h and was diluted with CH2Cl2, washed with 0.5N HCl, saturated NaHCO3, and brine. The organic layer was collected, dried over Na2SO4, and concentrated in vacuo. The solid obtained was triturated with Et2O and dried to give 2-anilino-N-methoxy-N,7-dimethyl-4-oxo-1-phenyl-1,4-dihydro-1,6 naphthyridine-5-carboxamide as a light yellow solid (50 mg, 55%): LCMS RT: 2.08 min, MH+: 414.9. This transformation can also be accomplished by coupling the appropriate amine with the corresponding acid chloride.

Workup

  1. washwashed with 0.5N HCl, saturated NaHCO3, and brine
  2. customThe organic layer was collected
  3. dry with materialdried over Na2SO4
  4. concentrationconcentrated in vacuo
  5. customThe solid obtained
  6. customwas triturated with Et2O
  7. customdried

Sources & evidence

ORD record
ord-85de73855613405186c5723c3049ae87
Source dataset
uspto-grants-2004_01
Patent number
US06677352B1

Reaction notes

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