Chromium Mediated Reductive Coupling of Isonitrile Forms Unusual Heterocycles

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• 作者：Jingmei Shen ; Glenn P. A. Yap ; Klaus H. Theopold
• 刊名：Journal of the American Chemical Society
• 出版年：2014
• 出版时间：March 5, 2014
• 年：2014
• 卷：136
• 期：9
• 页码：3382-3384
• 全文大小：233K
• 年卷期：v.136,no.9(March 5, 2014)
• ISSN：1520-5126

文摘

The quintuply bonded 伪-diimine chromium dimer [^HL^iPrCr]₂ reductively couples cyclohexyl isocyanide to produce various novel nitrogen heterocycles. Tetramerization yielded, inter alia, the aromatic squaramidinate, i.e. [C₄(NCy)₄]^{2鈥?/sup>, whereas hexamerization produces a substituted 1,4-diaza-bicyclo[3.3.0]octadiene dianion. These unprecedented transformations complement the coupling reactions of isoelectronic CO, and they may prove synthetically useful.}