Rhodium-Catalyzed Cyclization of Diynes with Nitrones: A Formal [2+2+5] Approach to Bridged Eight-Membered Heterocycles
作者:Chunxiang Wang、Dongping Wang、Hao Yan、Haolong Wang、Bin Pan、Xiaoyi Xin、Xincheng Li、Fan Wu、Boshun Wan
DOI:10.1002/anie.201407394
日期:2014.10.27
N‐aryl‐substituted nitrones were employed as five‐atom coupling partners in the rhodium‐catalyzed cyclization with diynes. In this reaction, the nitrone moiety served as a directing group for the catalytic CH activation of the N‐aryl ring. This formal [2+2+5] approach allows rapid access to bridged eight‐membered heterocycles with broad substrate scope. The results of this study may provide new insight
在二炔的铑催化环化反应中,N-芳基取代的硝酮被用作五原子偶联伙伴。在该反应中,硝酮部分充当N-芳基环催化CH活化的导向基团。这种正式的[2 + 2 + 5]方法允许快速访问具有广泛底物范围的桥接八元杂环。这项研究的结果可能为硝酮的化学提供新的见解,并发现其在其他杂环的合成中的应用。