Nickel-Catalyzed Cross-Coupling of Organolithium Reagents with (Hetero)Aryl Electrophiles
作者:Dorus Heijnen、Jean-Baptiste Gualtierotti、Valentín Hornillos、Ben L. Feringa
DOI:10.1002/chem.201505106
日期:2016.3.14
Nickel‐catalyzed selective cross‐coupling of aromatic electrophiles (bromides, chlorides, fluorides and methyl ethers) with organolithium reagents is presented. The use of a commercially available nickel N‐heterocyclic carbene (NHC) complex allows the reaction with a variety of (hetero)aryllithium compounds, including those prepared via metal‐halogen exchange or direct metallation, whereas a commercially
介绍了镍催化的芳香族亲电子试剂(溴化物、氯化物、氟化物和甲醚)与有机锂试剂的选择性交叉偶联。使用市售的镍N-杂环卡宾 (NHC) 配合物可以与多种(杂)芳基锂化合物反应,包括通过金属卤素交换或直接金属化制备的化合物,而市售的富电子镍-双膦络合物将烷基锂物质顺利地转化为相应的偶联产物。这些反应在温和条件(室温)下快速进行(1 小时),同时避免了不希望的还原或均偶联产物的形成。