Methanol → N-[4-(4-amino-2-butyl-1H-imidazo[4,5-c][1,5]naphthyridin-1-yl)butyl]-N'-benzylurea

HRID 497766Notes

Reaction equation

HRID 497766 reaction equation
[CH2:1]([N:8]=[C:9]=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[NH2:11][C:12]1[C:21]2[N:22]=[C:23]([CH2:30][CH2:31][CH2:32][CH3:33])[N:24]([CH2:25][CH2:26][CH2:27][CH2:28][NH2:29])[C:20]=2[C:19]2[N:18]=[CH:17][CH:16]=[CH:15][C:14]=2[N:13]=1.ClCCl.CO>O1CCCC1>[NH2:11][C:12]1[C:21]2[N:22]=[C:23]([CH2:30][CH2:31][CH2:32][CH3:33])[N:24]([CH2:25][CH2:26][CH2:27][CH2:28][NH:29][C:9]([NH:8][CH2:1][C:2]3[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=3)=[O:10])[C:20]=2[C:19]2[N:18]=[CH:17][CH:16]=[CH:15][C:14]=2[N:13]=1

Participants

6

Reactant 4

HCID 887MethanolHCID 6344DichloromethaneHCID 76639Benzyl isocyanateHCID 129926164-(4-amino-2-butyl 1H-imidazo[4,5-c][1,5]naphthyridin-1-yl)butaneamine

Product 1

HCID 12112186N-[4-(4-amino-2-butyl-1H-imidazo[4,5-c][1,5]naphthyridin-1-yl)butyl]-N'-benzylureaYield 74.8%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

Benzyl isocyanate (59 μL, 0.48 mmol) was added at ambient temperature to a suspension of 4-(4-amino-2-butyl-1H-imidazo[4,5-c][1,5]naphthyridin-1-yl)butaneamine (0.15 g, 0.48 mmol) in tetrahydrofuran (60 mL). A solution was obtained in less than 30 minutes and thin layer chromatography (9:1 dichloromethane:methanol) showed one major new spot with a higher Rf and only a trace of starting material. Aminomethyl resin (280 mg) was added and the reaction mixture was stirred for 15 minutes. The solvent was removed under vacuum. The residue was purified by column chromatography to provide 0.16 g of N-[4-(4-amino-2-butyl-1H-imidazo[4,5-c][1,5]naphthyridin-1-yl)butyl]-N′-benzylurea as a white solid. Analysis: Calculated for C25H31N7O: %C, 67.39; %H, 7.01; %N, 22.00; Found: %C, 67.43; %H, 6.92; %N, 22.02.

Workup

  1. customA solution was obtained in less than 30 minutes
  2. additionAminomethyl resin (280 mg) was added
  3. customThe solvent was removed under vacuum
  4. customThe residue was purified by column chromatography

Sources & evidence

ORD record
ord-f4b803ea09284a0eb58199f7aa83390e
Source dataset
uspto-grants-2005_09
Patent number
US06949646B2

Reaction notes

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