6-Methoxy-3-pyridinylamine → 5-chloro-N-(6-methoxypyridin-3-yl)-3-(2-methyl-9-(tetrahydro-2H-pyran-2-yl)-9H-purin-6-yl)pyridin-2-amine

HRID 1811847Notes

Reaction equation

HRID 1811847 reaction equation
[CH3:1][O:2][C:3]1[N:8]=[CH:7][C:6]([NH2:9])=[CH:5][CH:4]=1.C[Si]([N-][Si](C)(C)C)(C)C.[Li+].[Cl:20][C:21]1[CH:22]=[C:23]([C:28]2[N:36]=[C:35]([CH3:37])[N:34]=[C:33]3[C:29]=2[N:30]=[CH:31][N:32]3[CH:38]2[CH2:43][CH2:42][CH2:41][CH2:40][O:39]2)[C:24](F)=[N:25][CH:26]=1>C1COCC1.C(Cl)Cl.[Cl-].[Na+].O>[Cl:20][C:21]1[CH:22]=[C:23]([C:28]2[N:36]=[C:35]([CH3:37])[N:34]=[C:33]3[C:29]=2[N:30]=[CH:31][N:32]3[CH:38]2[CH2:43][CH2:42][CH2:41][CH2:40][O:39]2)[C:24]([NH:9][C:6]2[CH:7]=[N:8][C:3]([O:2][CH3:1])=[CH:4][CH:5]=2)=[N:25][CH:26]=1

Participants

7

Reactant 3

HCID 811216-Methoxy-3-pyridinylamineHCID 2733832Lithium HexamethyldisilazideHCID 595482256-(5-chloro-2-fluoropyridin-3-yl)-2-methyl-9-(tetrahydro-2H-pyran-2-yl)-9H-purine

Product 1

HCID 595484095-chloro-N-(6-methoxypyridin-3-yl)-3-(2-methyl-9-(tetrahydro-2H-pyran-2-yl)-9H-purin-6-yl)pyridin-2-amineYield 91%

Reagents, catalysts & solvents 3

HCID 6344DichloromethaneSolventHCID 8028TetrahydrofuranSolventHCID 57417360Sodium chloride; waterSolvent

Procedure

A solution of 6-methoxypyridin-3-amine (0.357 g, 2.88 mmol) (Source: Aldrich) in THF (10 mL) was treated with lithium bis(trimethylsilyl)amide (5.03 mL, 5.03 mmol) (Source: Aldrich) and the mixture was stirred under an inert atmosphere for 20 minutes. Then 6-(5-chloro-2-fluoropyridin-3-yl)-2-methyl-9-(tetrahydro-2H-pyran-2-yl)-9H-purine (0.500 g, 1.438 mmol) was added to the mixture and the mixture was stirred overnight. The reaction mixture was diluted with DCM and brine solution. The organic layer was collected by extracting the aqueous layer with DCM (3×20 mL). The combined organic layers were dried over sodium sulfate, filtered and concentrated in vacuo. The crude was purified by ISCO Silica-Gel Chromatography, Teledyne ISCO, Lincoln, Nebr., (120 gram column), using a gradient of 10-60% EtOAc/DCM over 37 minutes. The fractions with desired material were combined and concentrated to give 5-chloro-N-(6-methoxypyridin-3-yl)-3-(2-methyl-9-(tetrahydro-2H-pyran-2-yl)-9H-purin-6-yl)pyridin-2-amine (0.590 g, 1.306 mmol, 91% yield) as a yellow solid. m/z (ESI, +ve) 452 (M+H)+. 1H NMR (400 MHz, CDCl3) δ 9.76 (s, 1H); 8.40 (s, 1H); 8.23 (s, 1H); 8.16 (s, 2H); 7.19 (s, 1H); 6.75 (d, J=8.80 Hz, 1H); 5.80 (d, 1H); 4.14 (d, 1H); 3.91 (s, 4H); 3.76 (t, 1H); 2.83 (s, 3H); 1.46-2.25 (m, 5H).

Workup

  1. stirringthe mixture was stirred overnight
  2. customThe organic layer was collected
  3. extractionby extracting the aqueous layer with DCM (3×20 mL)
  4. dry with materialThe combined organic layers were dried over sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe crude was purified by ISCO Silica-Gel Chromatography, Teledyne ISCO, Lincoln, Nebr
  8. customover 37 minutes
  9. concentrationconcentrated

Sources & evidence

ORD record
ord-70362b52a8034471bfd77453a76aa36f
Source dataset
uspto-grants-2013_01
Patent number
US08362241B2

Reaction notes

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