作者:Zbyněk Hasník、Radek Pohl、Michal Hocek
DOI:10.1016/j.tetlet.2010.02.167
日期:2010.5
the synthesis of the title (purin-6-yl)methylphosphonates were investigated and compared. While, the Arbuzov reaction of 6-(iodomethyl)purines with triethyl phosphite did not work, Michaelis–Becker alkylation of the sodium salt of diethyl phosphonate with 6-(mesyloxymethyl)purines gave the desired products in good yields. The best method was based on Rh- or Pd-catalyzed cross-coupling reactions of 6-iodopurines
研究和比较了标题(嘌呤-6-基)甲基膦酸酯的三种合成方法。虽然6-(碘甲基)嘌呤与亚磷酸三乙酯的Arbuzov反应不起作用,但膦酸二乙酯钠盐与6-(甲磺酰氧基甲基)嘌呤的Michaelis-Becker烷基化反应却以高收率得到了所需的产物。最好的方法是基于6-碘嘌呤与(二异丙氧基磷酰基甲基)溴化锌的Rh或Pd催化的交叉偶联反应。以这种方式以高收率制备了少量的6-(二异丙氧基磷酰基甲基)嘌呤碱和核苷。