3,4-dihydro-2H-pyran → 6-Bromo-9-(tetrahydro-2H-pyran-2-YL)-9H-purine

HRID 410162Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 410162
[Br:1][C:2]1[N:10]=[CH:9][N:8]=[C:7]2[C:3]=1[NH:4][CH:5]=[N:6]2.[O:11]1[CH:16]=[CH:15][CH2:14][CH2:13][CH2:12]1.O.C1(C)C=CC(S(O)(=O)=O)=CC=1>CCOC(C)=O>[Br:1][C:2]1[N:10]=[CH:9][N:8]=[C:7]2[C:3]=1[N:4]=[CH:5][N:6]2[CH:12]1[CH2:13][CH2:14][CH2:15][CH2:16][O:11]1

Komponenten

5

Edukt 3

HCID 80803,4-dihydro-2H-pyranHCID 521998p-Toluenesulfonic acid monohydrateHCID 5287830Purine, 6-bromo-

Produkt 1

HCID 583686166-Bromo-9-(tetrahydro-2H-pyran-2-YL)-9H-purine

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

A mixture of 6-bromopurine (2.0 g, 10 mmol), 3,4-dihydro-2h-pyran (1.0 ml, 11 mmol), and p-toluenesulfonic acid monohydrate (0.050 g, 0.26 mmol) in EtOAc (30 mL) was stirred at reflux under a reflux condenser for 48 h. The reaction mixture (suspension) was allowed to cool to room temperature and the solid was removed by suction filtration and washed with EtOAc (50 mL). The combined wash was concentrated in vacuo to afford 2.1 g as oil. The oil was chromatographed through a Redi-Sep® pre-packed silica gel column, eluting with a gradient of 30% to 60% EtOAc in hexane, to provide product.

Aufarbeitung

  1. temperatureat reflux under a reflux condenser for 48 h
  2. customthe solid was removed by suction filtration
  3. washwashed with EtOAc (50 mL)
  4. washThe combined wash
  5. concentrationwas concentrated in vacuo
  6. customto afford 2.1 g as oil
  7. customThe oil was chromatographed through a Redi-Sep® pre-packed silica gel column
  8. washeluting with a gradient of 30% to 60% EtOAc in hexane
  9. customto provide product

Quellen und Nachweise

ORD-Eintrag
ord-1bc1870b1aa743c6aa37a583f894f1ff
Quelldatensatz
uspto-grants-2014_06
Patentnummer
US08759532B2

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