Allylic activation across an Ir–Sn heterobimetallic catalyst: nucleophilic substitution and disproportionation of allylic alcohol
作者:Paresh Nath Chatterjee、Sujit Roy
DOI:10.1016/j.tet.2012.02.054
日期:2012.5
A nucleophilic substitution of allylic alcohols with carbon (arene, heteroarene, allyltrimethylsilane, and 1,3-dicarbonyl compound), sulfur (thiol), oxygen (alcohol), and nitrogen (sulfonamide) nucleophiles has been demonstrated using an in house developed [Ir(COD)(SnCl3)l(μ-Cl)]2 heterobimetallic catalyst in 1,2-dichloroethane to afford the corresponding allylic products in moderate to excellent yields
使用内部研发的[Irr]证明了烯丙醇被碳(芳烃,杂芳烃,烯丙基三甲基硅烷和1,3-二羰基化合物),硫(硫醇),氧(醇)和氮(磺酰胺)亲核试剂取代。 (COD)(SnCl 3)l(μ-Cl)] 2异双金属催化剂在1,2-二氯乙烷中的生成,以中等至极好的收率得到相应的烯丙基产物。在4-羟基香豆素中,烯丙基化发生在3-位。在杂双金属催化剂的存在下,二芳基取代的烯丙基醇发生歧化,以提供相应的烯烃和查耳酮。Hammett相关性研究提出了一种亲电机理。