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• W2925128292 abstract "Reactions of a series of (arylimido)vanadium(V) trialkyl complexes, V(NAr′)(CH2SiMe3)3 (Ar′ = C6H5, 2-MeC6H4, 2,6-Me2C6H3, 2,6-Cl2C6H3), with various phenols (ArOH, Ar = 2,6-F2C6H3, 2,6-Cl2C6H3, 2,6-Me2C6H3, 2,6-iPr2C6H3, 2-tBuC6H4, 2,6-tBu2C6H3; 1.0 equiv) affording V(NAr′)(CH2SiMe3)2(OAr) were conducted in C6D6 at 25 °C, and the effects of both arylimido ligands and phenols on the substitution rate were explored. Sterically hindered arylimido ligands showed lower reactivity, and the reaction proceeded in the order: Ar′ = 2,6-Me2C6H3 < 2,6-Cl2C6H3 < 2-MeC6H4 < C6H5. This order is somewhat different from that obtained from the chemical shifts in V(NAr′)(CH2SiMe3)3 in the 51V NMR spectra. The conversions with various disubstituted phenols increased in the order: 2,6-iPr2C6H3OH < 2,6-Me2C6H3OH < 2,6-Cl2C6H3OH < 2,6-F2C6H3OH, irrespective of the kind of arylimido ligands. The reactions of V(NAr′)(CH2SiMe3)3 with 2,6-tBu2C6H3OH (1.0 or 3.0 equiv) did not take place even upon heating at 60 °C. These results suggest that the reactions proceed via coordination of ArOH toward vanadium, and the reactivity is highly dependent on steric bulk of both the arylimido ligand and the phenol." @default.
• W2925128292 created "2019-04-01" @default.
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• W2925128292 date "2019-03-25" @default.
• W2925128292 modified "2023-10-12" @default.
• W2925128292 title "Reactions of (Arylimido)vanadium(V)–Trialkyl Complexes with Phenols: Effects of Arylimido Ligands and Phenols for Formation of the Vanadium Phenoxides" @default.
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• W2925128292 doi "https://doi.org/10.1021/acsomega.9b00531" @default.
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