Hydrochloric Acid → HCID 13869775, compound

HRID 1370008Notes

Reaction equation

HRID 1370008 reaction equation
[NH2:1][C:2]1[N:10]=[C:9]2[C:5]([N:6]=[CH:7][N:8]2[CH2:11][CH2:12][CH:13]2[CH2:18][O:17]C(C)(C)[O:15][CH2:14]2)=[C:4](Cl)[N:3]=1.[CH3:22][CH:23]([CH3:25])[O-:24].[Na+].Cl.O>C(O)(C)C>[NH2:1][C:2]1[N:10]=[C:9]2[C:5]([N:6]=[CH:7][N:8]2[CH2:11][CH2:12][CH:13]([CH2:14][OH:15])[CH2:18][OH:17])=[C:4]([O:24][CH:23]([CH3:25])[CH3:22])[N:3]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 962WaterHCID 109204432-Propanol, sodium salt (1:1)HCID 117713466-Chloro-9-[2-(2,2-dimethyl-1,3-dioxan-5-yl)ethyl]-9H-purin-2-amine

Product 1

HCID 13869775HCID 13869775, compound

Reagents, catalysts & solvents 1

HCID 3776IsopropanolSolvent

Procedure

A solution of 2-amino-6-chloro-9-[2-(2,2-dimethyl-1,3-dioxan-5-yl)ethyl]purine (0.25 g, 0.8 mmol) in isopropanol (2.5 ml) containing sodium isopropoxide (0.5M) was stirred at 60° for 25 minutes. After cooling, hydrochloric acid (5M, 0.3 ml) and water (0.7 ml) were added and the solution was stirred for 15 minutes at room temperature. The solution was neutralised by addition of aqueous.sodium bicarbonate and the solvent was removed. The residue was extracted with chloroform-ethanol (2:1) and the solution purified by column chromatography on silica gel eluting with chloroform-methanol (7:1) to afford 2-amino-9-(4-hydroxy-3-hydroxymethylbut-1-yl)-6-isopropoxypurine which was crystallised from chloroform-carbon tetrachloride (0.18 g, 76%), m.p. 111.5-113.5° C., δH [(CD3)2SO] 1.34 (6H, d, J 6.3 Hz, C(CH3)2), 1.45 (1H, m, 3′-H), 1.74 (2H, q, J 7.2 Hz, 2′-H), 3.3-3.5 (4H, AB part of ABX, 2×4′-H), 4.06 (2H, t, J 7.3 Hz, 1′-H), 4.40 (2H, br, 2×OH), 5.49 (1H, septet, J 6.3 Hz, CH(CH3)2), 6.27 (2H, s, 2-NH2), and 7.83 (1H, s, 8-H).

Workup

  1. temperatureAfter cooling
  2. stirringthe solution was stirred for 15 minutes at room temperature
  3. additionThe solution was neutralised by addition of aqueous
  4. customsodium bicarbonate and the solvent was removed
  5. extractionThe residue was extracted with chloroform-ethanol (2:1)
  6. customthe solution purified by column chromatography on silica gel eluting with chloroform-methanol (7:1)

Sources & evidence

ORD record
ord-3fd618a8d3f4455888d19095c765f2a3
Source dataset
uspto-grants-2003_06
Patent number
US06579981B1

Reaction notes

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