Direct Arylation of 6-Phenylpurine and 6-Arylpurine Nucleosides by Ruthenium-Catalyzed CH Bond Activation
作者:Mahesh K. Lakshman、Ashoke C. Deb、Raghu Ram Chamala、Padmanava Pradhan、Ramendra Pratap
DOI:10.1002/anie.201104035
日期:2011.11.25
One aryl or two? The title reaction predominantly gives the monoarylation products with various amounts of diarylation product being observed in almost all cases (see scheme). Aryl iodides as well as aryl bromides were reactive under the optimized reaction conditions. The multiple nitrogen atoms in the purine, and oxygen atoms in the saccharide posed no problems in these transformations.
一个芳基还是两个?标题反应主要产生单芳基化产物,在几乎所有情况下都观察到不同量的二芳基化产物(参见方案)。芳基碘化物和芳基溴化物在优化的反应条件下具有反应性。嘌呤中的多个氮原子和糖中的氧原子在这些转化中没有问题。