Ligand-Free Iron-Catalyzed Carbon (sp2)–Carbon (sp2) Oxidative Homo-Coupling of Alkenyllithiums
Organic Letters(2019)
摘要
A new strategy was developed for the efficient synthesis of di-, tetra-, and hexa-substituted 1,3-butadienes. This one-pot procedure involves lithium–iodine exchange to generate the corresponding vinyllithium intermediates. A subsequent iron-catalyzed ligand-free oxidative homo-coupling eventually led to the formation of 1,3-butadienes in acceptable to excellent isolated yields.
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关键词
alkenyllithiums,ligand-free,iron-catalyzed,homo-coupling
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