Adenine → 9-(Phenylmethyl)-9H-purin-6-amine

HRID 1297150

Reaktionsgleichung

[N:1]1[C:9]([NH2:10])=[C:8]2[C:4]([N:5]=[CH:6][NH:7]2)=[N:3][CH:2]=1.[H-].[Na+].[CH2:13](Br)[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1>CN(C=O)C>[CH2:13]([N:5]1[CH:6]=[N:7][C:8]2[C:4]1=[N:3][CH:2]=[N:1][C:9]=2[NH2:10])[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1

Komponenten

Reaktionsbedingungen

Temperatur: 60 °C

Versuchsvorschrift

To a suspension of adenine (5) (5.00 g, 37.0 mmol) in dry DMF (120 mL) was added NaH (1.77 g, 44.4 mmol) at room temperature. The reaction mixture was stirred for 30 min and the resulting white suspension was warmed to 60° C. for an additional 30 min. Benzyl bromide (7.59 g, 44.4 mmol) was added and the mixture was stirred for 24 h at 60° C. TLC of the reaction mixture indicated the formation of two products. DMF was distilled off under reduced pressure and the resulting residue was treated with water (20 mL). The white solid that separated out, was filtered and dried under vacuum. Separation and purification was through flash column chromatography using CHCl3::MeOH (9:1) for elution. 9-Benzyladenine: yield 5.5 g. (66%); mp 231-232° C.; 1H NMR (DMSO-d6,: δ 5.38 (s, 2H, CH2), 7.29-7.33 (m, 7H, Ar—H and NH2), 8.17 (s, 1H, purine C8—H), 8.28 (s, 1H, purine C2—H). 7-Benzyladenine: yield 1.8 g. (21%). Mp 252-255° C. 1H NMR (DMSO-d6): δ 5.53 (s, 2H, CH2), 7.29-7.48 (m, 5H, Ar—H), 7.81 (s, 1H, purine C8—H), 8.0-8.1 (br, 2H, NH2), 8.6 (s, 1H, purine C2—H).

Aufarbeitung

stirringthe mixture was stirred for 24 h at 60° C
distillationDMF was distilled off under reduced pressure
additionthe resulting residue was treated with water (20 mL)
customThe white solid that separated out
filtrationwas filtered
customdried under vacuum
customSeparation and purification
washMeOH (9:1) for elution

Quellen und Nachweise

ORD-Eintrag: ord-876262c0be254120ba2da76ee0d52dbc
Quelldatensatz: uspto-grants-2007_07
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US07250421B2

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