Chloride → 6-Amino-2-(cyclohexyloxy)-9-[4-(1-piperidinyl)butyl]-7,9-dihydro-8H-purin-8-one

HRID 562792Notes

Reaction equation

HRID 562792 reaction equation
[I-].[Na+].Cl[CH2:4][CH2:5][CH2:6][CH2:7][N:8]1[C:16]([O:17]C)=[N:15][C:14]2[C:9]1=[N:10][C:11]([O:20][CH:21]1[CH2:26][CH2:25][CH2:24][CH2:23][CH2:22]1)=[N:12][C:13]=2[NH2:19].C(N(CC)C(C)C)(C)C.[NH:36]1[CH2:41][CH2:40][CH2:39][CH2:38][CH2:37]1.[Cl-]>CN(C=O)C>[NH2:19][C:13]1[N:12]=[C:11]([O:20][CH:21]2[CH2:22][CH2:23][CH2:24][CH2:25][CH2:26]2)[N:10]=[C:9]2[C:14]=1[NH:15][C:16](=[O:17])[N:8]2[CH2:7][CH2:6][CH2:5][CH2:4][N:36]1[CH2:41][CH2:40][CH2:39][CH2:38][CH2:37]1

Participants

7

Reactant 5

HCID 312ChlorideHCID 5238Sodium IodideHCID 8082Piperidine2×HCID 81531DiisopropylethylamineHCID 592526519-(4-chlorobutyl)-2-(cyclohexyloxy)-8-(methyloxy)-9H-purin-6-amine

Product 1

HCID 592526316-Amino-2-(cyclohexyloxy)-9-[4-(1-piperidinyl)butyl]-7,9-dihydro-8H-purin-8-oneYield 14.1%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

Sodium iodide (0.006 g, 0.04 mmol) was added to a stirred mixture of 9-(4-chlorobutyl)-2-(cyclohexyloxy)-8-(methyloxy)-9H-purin-6-amine (0.103 g, 0.303 mmol), N,N-diisopropylethylamine (0.105 ml, 0.079 g, 0.609 mmol) and piperidine (0.120 ml, 0.103 g, 1.215 mmol) in DMF (1.5 ml). The resultant mixture was heated at 80° C. for 20 hours when LCMS showed the formation of two products, one corresponding to displacement of the chloride by piperidine and the second corresponding to concomitant hydrolysis of the 8-methoxy moiety. The reaction mixture was partitioned between dichloromethane (6 ml) and water (6 ml) and the phases separated using a hydrophobic frit. The solvent was removed from the organic phase under a stream of nitrogen in a blow-down unit and the residue was dissolved in 1:1 MeOH:DMSO (2 ml) and separated by mass directed autopreparation (Method A) to afford the title compound as a white solid (16.6 mg).

Workup

  1. customThe reaction mixture was partitioned between dichloromethane (6 ml) and water (6 ml)
  2. customthe phases separated
  3. customThe solvent was removed from the organic phase under a stream of nitrogen in a blow-down unit
  4. dissolutionthe residue was dissolved in 1:1 MeOH
  5. customDMSO (2 ml) and separated by mass

Sources & evidence

ORD record
ord-0745c18d968c43c6a7e6e24d898d941f
Source dataset
uspto-grants-2011_11
Patent number
US08067426B2

Reaction notes

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