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Divergent Iron-Catalyzed Coupling of O-Acyloximes with Silyl Enol Ethers

机译:用甲硅烷基烯醇醚对O-酰氧imiminimes的发散铁催化偶联

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摘要

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 over reactions that proceed through a 1,3- hydrogen transfer, providing insights into iron-catalyzed reactions with oxime derivatives. The cheap and environmentally friendly iron catalyst, the broad substrate scope and the functional group compatibility make this protocol useful for synthesis of valuable nitrogen-containing products.
机译:据报道了O-酰氧ims和与甲硅烷基烯醇醚的O-丙基氧基和O-苯甲酰基的铁催化偶联反应。 该方案通过从最初形成的二烯基自由基产生的碳中心基团提供对官能化的吡咯,1,6-酮腈,吡咯烷和咪唑啉的途径。 亚锡基团的分子内环化和开环过程优先于进入1,3-氢转移的反应中进行,提供与肟衍生物的铁催化反应的见解。 廉价环保的铁催化剂,宽基板范围和官能团相容性使得该方案适用于合成有价值的含氮产品。

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