反应详情

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).

1. customThe precipitate is collected
2. washwashed three times with diethyl ether (3×50 ml)
3. customThe filtrate is evaporated to dryness
4. waitstored at −20° C. for 48 h
5. customThe precipitate is collected
6. washwashed with diethyl ether
7. customThe combined precipitates