Synthesis and Structural Characterization of Monomeric Three-Coordinated β-Diketoiminate Organozinc Derivatives
摘要:
The monomeric zinc compounds with three-coordinated zinc (dipp)NacNacZnCl (1), (dipp)NacNacZnMe (2), (dipp)NacNacZntBu (3), and (dipp)NacNacZnPh (4) were prepared under mild conditions in strong coordinating donor solvents. Compounds 2-4 have been structurally characterized. The beta -diketoiminate ligand (2-((2,6-diisopropylphenyl)amino)-4-((2,6-diisopropylphenyl)imino)pent-2-ene) ((dipp)NacNac) acts as a chelating ligand through its two N atoms, forming a six-membered ring with the zinc atom.
Palladium‐Catalysed C−H Bond Zincation of Arenes: Scope, Mechanism, and the Role of Heterometallic Intermediates
作者:Martí Garçon、Nicolette Wee Mun、Andrew J. P. White、Mark R. Crimmin
DOI:10.1002/anie.202014960
日期:2021.3.8
of paramount importance in synthesis. A particular focus has been the generation of organoboranes, organosilanes and organostannanes from simple hydrocarbons (X=B, Si, Sn). Despite the importance of organozinc compounds (X=Zn), their synthesis by the catalytic functionalisation of C−H bonds remains unknown. Herein, we show that a palladium catalyst and zinc hydride reagent can be used to transform C−H