Diverting Ni‐Catalyzed Direct Benzylic C−H Hydroxylation towards Trifluoroethoxylation
作者:Dmitry S. Bushmin、Denis G. Samsonenko、Evgenii P. Talsi、Oleg Y. Lyakin、Konstantin P. Bryliakov
DOI:10.1002/cctc.202301346
日期:2024.4.8
Ni complexes with N4-donor aminopyridine ligands efficiently catalyze regioselective oxidation of organic substrates at benzylic C−H groups. Crucially, using trifluoroethanol as reaction solvent diverts the reaction selectivity towards 1-phenylalkyl 2,2,2-trifluoroethyl ethers in high yields.
Ni 与N 4-供体氨基吡啶配体的配合物可有效催化有机底物在苄基 C−H 基团上的区域选择性氧化。至关重要的是,使用三氟乙醇作为反应溶剂可以将反应选择性转向 1-苯基烷基 2,2,2-三氟乙基醚,且产率较高。
作者:Dmitry P. Lubov、Konstantin S. Ivanov、Andrey A. Nefedov、Evgenii P. Talsi、Konstantin P. Bryliakov
DOI:10.1016/j.jcat.2024.115563
日期:2024.7
Palladium(II) complexes of the TPA family (TPA − (2-pyridylmethyl)amine) have recently emerged as efficient catalysts of highly 3°-regioselective hydroxylation and chemoselective 2°-ketonization of aliphatic C–H groups with peroxycarboxylic acids. Herewith, we present a novel facet of the catalytic reactivity of such complexes that have been shown to mediate highly efficient (at as low as 0.6 mol.