1,2-Dimethoxyethane → 1-[4-amino-2-(ethoxymethyl)-7-phenyl-1H-imidazo[4,5-c][1,5]naphthyridin-1-yl]-2-methylpropan-2-ol

HRID 598019Notes

Reaction equation

HRID 598019 reaction equation
[NH2:1][C:2]1[C:11]2[N:12]=[C:13]([CH2:20][O:21][CH2:22][CH3:23])[N:14]([CH2:15][C:16]([CH3:19])([OH:18])[CH3:17])[C:10]=2[C:9]2[N:8]=[CH:7][C:6](Br)=[CH:5][C:4]=2[N:3]=1.[C:25]1(B(O)O)[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1.C(=O)([O-])[O-].[K+].[K+].COCCOC>Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.O>[NH2:1][C:2]1[C:11]2[N:12]=[C:13]([CH2:20][O:21][CH2:22][CH3:23])[N:14]([CH2:15][C:16]([CH3:19])([OH:18])[CH3:17])[C:10]=2[C:9]2[N:8]=[CH:7][C:6]([C:25]3[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=3)=[CH:5][C:4]=2[N:3]=1

Participants

7

Reactant 4

HCID 80711,2-DimethoxyethaneHCID 11430Potassium CarbonateHCID 66827Phenylboronic AcidHCID 589706811-[4-amino-7-bromo-2-(ethoxymethyl)-1H-imidazo[4,5-c][1,5]naphthyridin-1-yl]-2-methylpropan-2-ol

Product 1

HCID 589707051-[4-amino-2-(ethoxymethyl)-7-phenyl-1H-imidazo[4,5-c][1,5]naphthyridin-1-yl]-2-methylpropan-2-olYield 57.7%

Reagents, catalysts & solvents 2

HCID 178418476HCID 178418476, compoundCatalystHCID 962WaterSolvent

Procedure

A suspension of 1-[4-amino-7-bromo-2-(ethoxymethyl)-1H-imidazo[4,5-c][1,5]naphthyridin-1-yl]-2-methylpropan-2-ol (1.55 g, 3.93 mmol), phenylboronic acid (0.575 g, 4.72 mmol), potassium carbonate (1.79 g, 13.0 mmol), dichlorobis(triphenylphosphine)palladium(II)(0.028 g, 0.039 mmol), DME (13 mL), and water (7 mL) was stirred under a nitrogen atmosphere and then heated at reflux for 61 hours and allowed to cool to room temperature. The volatiles were removed under reduced pressure. The residue was diluted with methanol, and silica gel was added. The mixture was concentrated under reduced pressure. The residue was purified by chromatography according to the method described in Example 59. The resulting foamy solid (1.55 g) was concentrated twice from acetonitrile and then triturated with acetonitrile (25 mL) to provide a solid. The solid was isolated by filtration, washed with acetonitrile, and dried in a vacuum oven at 65° C. to provide 887 mg of 1-[4-amino-2-(ethoxymethyl)-7-phenyl-1H-imidazo[4,5-c][1,5]naphthyridin-1-yl]-2-methylpropan-2-ol as an off-white solid, mp 158-159° C.

Workup

  1. temperatureheated
  2. temperatureat reflux for 61 hours
  3. customThe volatiles were removed under reduced pressure
  4. additionThe residue was diluted with methanol, and silica gel
  5. additionwas added
  6. concentrationThe mixture was concentrated under reduced pressure
  7. customThe residue was purified by chromatography
  8. concentrationThe resulting foamy solid (1.55 g) was concentrated twice from acetonitrile
  9. customtriturated with acetonitrile (25 mL)
  10. customto provide a solid
  11. customThe solid was isolated by filtration
  12. washwashed with acetonitrile
  13. customdried in a vacuum oven at 65° C.

Sources & evidence

ORD record
ord-9d7d394b69bf45218fbef40fcadf7d3a
Source dataset
uspto-grants-2011_03
Patent number
US07897609B2

Reaction notes

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