2-Bromopropane → (3-Chlorobenzyl)-(2-fluoro-9-isopropyl-9H-purin-6-yl)amine

HRID 2047660Notes

Reaction equation

HRID 2047660 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([CH:17]=[CH:18][CH:19]=1)[CH2:5][NH:6][C:7]1[N:15]=[C:14]([F:16])[N:13]=[C:12]2[C:8]=1[N:9]=[CH:10][NH:11]2.C(=O)([O-])[O-].[K+].[K+].Br[CH:27]([CH3:29])[CH3:28].C(Cl)Cl.CCOCC.CO>CN(C)C=O>[Cl:1][C:2]1[CH:3]=[C:4]([CH:17]=[CH:18][CH:19]=1)[CH2:5][NH:6][C:7]1[N:15]=[C:14]([F:16])[N:13]=[C:12]2[C:8]=1[N:9]=[CH:10][N:11]2[CH:27]([CH3:29])[CH3:28]

Participants

6

Reactant 4

HCID 63582-BromopropaneHCID 11430Potassium CarbonateHCID 22565053DCM ether MeOHHCID 178506014HCID 178506014, compound

Product 1

HCID 57433115(3-Chlorobenzyl)-(2-fluoro-9-isopropyl-9H-purin-6-yl)amine

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a stirred solution of (3-chloro-benzyl)-(2-fluoro-9H-purin-6-yl)-amine (0.6 g, 2.16 mmol) in dimethylformamide (10 ml) at room temperature under an argon atmosphere, was added powdered, anhydrous potassium carbonate (1.47 g, 5 eq, 10.8 mmol), followed by 2-bromopropane (2.2 ml, 10 eq, 21.6 mmol). The reaction mixture was stirred at room temperature for 24 h, when DCM:ether:MeOH (55:40:5), indicated that the reaction had gone to completion. The solvent was evaporated in vacuo and the residue partitioned between ethyl acetate (50 ml) and water (50 ml). The aqueous phase was extracted with more ethyl acetate (2×50 ml) and the combined organic phase washed with brine (50 ml), dried (MgSO4) and evaporated in vacuo. The residue was purified by silica gel flash column chromatography, eluted with CHCl3 to afford the title compound as a slightly yellow gum; Yield: 0.45 g (65%). δH (250 MHz, CDCl3) 1.57 (6H, d, J 7.5, CH[CH3]2), 4.81-4.63 (3 H, m, NHCH2Ar and CHMe2), 5.98 (1 H, s, br, NH), 7.29-7.19 (3 H, m, ArH), 7.34 (1 H, s, br, ArH), 7.42 (1 H, d, J 7.5, ArH), 7.51 (1 H, s, br, NH); δC (250 MHz, CDCl3) 161.93 (C), 156.37 (C), 156.05 (C), 141.33 (C), 140.42 (C), 137.75 (CH), 134.49 (C), 129.92 (CH), 127.69 (CH), 125.81 (CH), 125.64 (CH), 47.43 (CH), 43.82 (CH2), 22.56 (2×CH3); m/z 320.3 (M+H)

Workup

  1. customThe solvent was evaporated in vacuo
  2. customthe residue partitioned between ethyl acetate (50 ml) and water (50 ml)
  3. extractionThe aqueous phase was extracted with more ethyl acetate (2×50 ml)
  4. washthe combined organic phase washed with brine (50 ml)
  5. dry with materialdried (MgSO4)
  6. customevaporated in vacuo
  7. customThe residue was purified by silica gel flash column chromatography
  8. washeluted with CHCl3

Sources & evidence

ORD record
ord-5ee3dcf2c1654eee99168997a77c1dd9
Source dataset
uspto-grants-2013_11
Patent number
US08592581B2

Reaction notes

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