Metal-Free Synthesis of 6-Phosphorylated Phenanthridines: Synthetic and Mechanistic Insights
作者:Ludovik Noël-Duchesneau、Elodie Lagadic、Fabrice Morlet-Savary、Jean-François Lohier、Isabelle Chataigner、Martin Breugst、Jacques Lalevée、Annie-Claude Gaumont、Sami Lakhdar
DOI:10.1021/acs.orglett.6b02983
日期:2016.11.18
the generation of phosphinoyl radicals from the combination of diphenyliodonium salt (Ph2I+,–OTf) with triethylamine (Et3N) in the presence of secondary phosphine oxides is reported. By employing this practical and simple approach, a large variety of 6-phosphorylated phenanthridines have been synthesized through the addition of phosphinoyl radicals to isonitriles as radical acceptors. The reaction works
报道了在仲氧化膦的存在下,由二苯基碘鎓盐(Ph 2 I +,– OTf)与三乙胺(Et 3 N)结合生成膦酰基的新颖有效方法。通过采用这种实用且简单的方法,已经通过向膦腈中添加膦酰基作为自由基受体而合成了多种6-磷酸化的菲啶。在没有任何过渡金属或光催化剂的情况下,该反应可顺利进行。在电子顺磁共振(EPR)和密度泛函理论(DFT)计算的基础上,讨论了该反应的机理。