The Front Cover shows the beautifully delicate architecture of Hawa Mahal as a symbol of the delicate balance of various factors in the described C−N bond formation of N⁶‐([1,1′‐biaryl]‐2‐yl)adenine nucleosides promoted by PhI(OAc)₂ under both Pd‐mediated and uncatalyzed reaction conditions, which ultimately leads to relatively complex product structures. In their Full Paper, S. Satishkumar et al. demonstrate that the selectivity of the reaction can be modulated to produce either carbazolyl or aryl benzimidazopurinyl nucleoside derivatives. More information can be found in the Full Paper by S. Satishkumar et al. on page 4058 in Issue 21, 2017 (DOI: 10.1002/cctc.201700918).

中文翻译：

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前封面：N6-（[[1,1'-Biaryl] -2-yl）腺嘌呤核苷的Pd催化与未催化的PhI（OAc）2介导的环化反应（ChemCatChem 21/2017）

封面显示了哈瓦玛哈尔（Hawa Mahal）精美精致的建筑，它象征着所描述的N ⁶ -（[[1,1'-Biaryl] -2-yl）腺嘌呤核苷的C-N键形成中各种因素之间的微妙平衡。由PhI（OAc）₂在Pd介导和未催化的反应条件下产生，最终导致相对复杂的产物结构。S. Satishkumar等人在其论文全文中。证明可以调节反应的选择性以产生咔唑基或芳基苯并咪唑并嘌呤基核苷衍生物。可以在S. Satishkumar等人的论文全文中找到更多信息。就在问题21，2017年4058页（：10.1002 / cctc.201700918 DOI）。