作者:Hai-Bin Yang、Nicklas Selander
DOI:10.1002/chem.201605636
日期:2017.2.3
An iron‐catalyzed coupling reaction of O‐acyloximes and O‐benzoyl amidoximes with silyl enol ethers is reported. The protocol provides access to functionalized pyrroles, 1,6‐ketonitriles, pyrrolines and imidazolines via carbon‐centered radicals generated from an initially formed iminyl radical. The intramolecular cyclization and ring‐opening processes of the iminyl radical take place preferentially
据报道,O-酰基肟和O-苯甲酰a肟与甲硅烷基烯醇醚的铁催化偶联反应。该协议提供了通过最初形成的亚胺基生成的碳中心基团来访问官能化的吡咯,1,6-酮腈,吡咯啉和咪唑啉的途径。亚胺基的分子内环化和开环过程优先于通过1,3-氢转移进行的反应,从而提供了对肟催化的铁催化反应的见解。廉价且环保的铁催化剂,广泛的底物范围和官能团的相容性使该方案可用于合成有价值的含氮产物。