AbstractThe involvement of manganese radical for halogen atom transfer (XAT) reactions has been esteemed as one reliable method but encountered with limited catalytic models. In this paper, a novel bimetallic relay catalysis of Mn2(CO)10 and cobaloxime has been developed for divergent dehydrogenative difluoroalkylation of alkenes using commercially available difluoroalkyl bromides. A wide range of structurally diverse terminal, cyclic and internal alkenes as well as tetrasubstituted alkenes are found to be good coupling partners to deliver difluoroalkylated allylic products and difluoromethylated cyclic products, accompanied with the production of H2 as the by‐product. This bimetallic relay strategy features broad substrate scope, mild reaction conditions and excellent functional group compatibility. Its success represents an important step‐forward to expedite the construction of a rich library of difluoroalkylated products.
摘要锰自由基参与卤原子转移(XAT)反应一直被认为是一种可靠的方法,但催化模型有限。本文开发了一种新型的 Mn2(CO)10 和钴肟双金属接力催化法,用于使用市售的二氟烷基溴对烯烃进行歧化脱氢二氟烷基化反应。研究发现,多种结构不同的末端、环状和内部烯烃以及四取代烯烃都是良好的偶联伙伴,可提供二氟烷基化烯丙基产物和二氟甲基化环状产物,并产生 H2 作为副产品。这种双金属中继策略具有广泛的底物范围、温和的反应条件和出色的官能团兼容性。它的成功为加快构建丰富的二氟烷基化产物库迈出了重要一步。