Abstract
Iron pincer complexes exhibit excellent activity in homogeneous catalysis.
Highlights
Complexes of precious metals, those from the platinum group, occupy a central place in homogeneous catalysis
This review focuses on the catalytic applications of iron pincer complexes.[3,6,7,8]
The large number of successful applications underscores the advantages of pincer ligands, namely their diversity, modularity, and strong chelating ability
Summary
Those from the platinum group, occupy a central place in homogeneous catalysis. Stoichiometric reactions revealed that the bridging methylene group of 12 was deprotonated by KOtBu to form the complex [(iPrPCNCP-H)FeH(CO)] (13, Fig. 7) containing a dearomatized pyridine ligand. The mechanism of hydrogenation catalyzed by 19a-Br was investigated by stoichiometric reactions and DFT computations.[39] The results suggested that 19a-Br reacted with one equivalent of a base to afford the deprotonated 5-coordinated complex [(iPrPNNNP-H)FeH(CO)] (20; Fig. 9). The promotion by HCOONa encouraged the study of 24-L for transfer hydrogenation of aldehydes using sodium formate as the hydrogen donor Both catalysts were active and chemoselective for this reaction (Table 2).[41]. 12 13 14 15 16 a Yield determined by GC (isolated yield). b Not accessible
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