Silver-catalyzed 2-isocyanobiaryls insertion/cyclization with phosphine oxides: synthesis of 6-phosphorylated phenanthridines
作者:Jia-Jia Cao、Tong-Hao Zhu、Zheng-Yang Gu、Wen-Juan Hao、Shun-Yi Wang、Shun-Jun Ji
DOI:10.1016/j.tet.2014.07.078
日期:2014.9
silver-catalyzed 2-isocyanobiaryls insertion/cyclization with phosphine oxides was described for the construction of the 6-phosphorylated phenanthridines through radical addition of in situ formed P-centered radical to 2-isocyanobiphenyls and homolytic aromatic substitution process. The reactions could proceed smoothly to give the desired 6-phosphorylated phenanthridines promoted by AgOAc (20 mol %) with PhI(OAc)2
描述了一种通过氧化膦的银催化的2-异氰基联芳基插入/环化反应,用于通过向2-异氰基联苯中原位形成的P-中心基团进行自由基加成和均相芳族取代过程来构建6-磷酸化的菲啶。反应可以顺利进行,以得到由AgOAc(20mol%)与PhI(OAc)2(3.0当量)促进的期望的6-磷酸化的菲啶。