Synthesis of (arylimido)vanadium complexes and their application for oxidative coupling reactions of silyl enol ether derivatives

被引：16

作者：

Nishina, Masafumi ^{[1
]}

Moriuchi, Toshiyuki ^{[1
]}

Hirao, Toshikazu ^{[1
]}

机构：

[1] Osaka Univ, Dept Appl Chem, Grad Sch Engn, Suita, Osaka 5650871, Japan

来源：

DALTON TRANSACTIONS | 2010年 / 39卷 / 41期

关键词：

OPENING METATHESIS POLYMERIZATION; STRUCTURAL-CHARACTERIZATION; ETHYLENE POLYMERIZATION; IMIDOVANADIUM COMPLEXES; IMIDO; VANADIUM; OXOVANADIUM; NMR; COORDINATION; DIMERIZATION;

D O I：

10.1039/c0dt00633e

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

(Arylimido)vanadium(v) complexes, V(NAr)(OEt)Cl-2 [Ar = C6H5, p-BrC6H4, p-(MeO)C6H4] or V(NAr)Cl-3 [Ar = o-BrC6H4, o-(MeO)C6H4] were synthesized by the reaction of VO(OEt)Cl-2 or VOCl3, respectively, with the corresponding aryl isocyanates. X-Ray crystal structure determination for V(NAr)(OEt)Cl-2 (Ar = C6H5 and p-BrC6H4) elucidates the alkoxido-bridged dimeric building blocks [V(NAr)(OEt)Cl-2](2), wherein the substituent on the benzene ring was found to affect the character of the imido nitrogen. The V-51 NMR spectroscopic measurements indicated that the electronic state of the vanadium metal centre depends on the ligands connecting to the vanadium and the substituents on the benzene ring. The selective oxidative cross-coupling reaction of silyl ketene acetal with silyl enol ether was achieved using V(Np-BrC6H4)Cl-3 or V(No-BrC6H4)Cl-3.

引用

页码：9936 / 9940

页数：5

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