Triphenylphosphine → Deoxyuridine
Reaktionsgleichung
I[C:2]1[C:3](=[O:20])[NH:4][C:5](=[O:19])[N:6]([CH:18]=1)[C@@H:7]1[O:14][C@H:11]([CH2:12][OH:13])[C@@H:9]([OH:10])[C@H:8]1N=[N+]=[N-].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>O1CCOCC1>[C@@H:7]1([N:6]2[CH:18]=[CH:2][C:3](=[O:20])[NH:4][C:5]2=[O:19])[O:14][C@H:11]([CH2:12][OH:13])[C@@H:9]([OH:10])[CH2:8]1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
To a solution of 5-iodo,2'-azido,2'-deoxyuridine (2.48 g, 6.3 mmoles) in dioxane (33 ml) is added triphenylphosphine (5.8 g, 22 mmoles, 3.5 eq.) and the mixture is stirred at room temperature for 1 h, during which time a white precipitate forms. The precipitate is collected and washed three times with diethyl ether (3×50 ml). The filtrate is evaporated to dryness, taken up in a minimum amount of dioxane, and stored at -20° C. for 48 h. The precipitate is collected and washed with diethyl ether. The combined precipitates gave 1.81 g of 5-iodo,2'-amino, 2'-deoxyuridine (78% yield). The spectral properties agreed with those reported in the literature (Verheyden et al. (1971) supra).