Vanadyl acetylacetonate 472 Reagent

Organovanadium reagents, 219 Phenylmagnesium bromide-Vanadi-um(III) chloride, 219 Vanadium(III) chloride, 219 Vanadyl acetylacetonate, 54 Vanadyl trichloride, 289 Zinc Compounds Bis(acetylacetonate)zinc(II), 33... 

Bis(acctonitro)chloronitropalladium(II). /-Butyl hydroperoxide-Dialkyl taitratesr-Vanadium(IV) isoproxide. t-Butylhydroperoxide-Molybdenum carbonyl. t-Butylhydroperoxide-Vanadyl acetylacetonate. [(— )-Camphor-10-ylsulfonyl]-3-aryloxaziridines. m-Chloroperbenzoic acid-Potassium fluoride. Dimethylsulfonium methylidc. 3,5-Dinitroperbenzoic acid. Hydrogen peroxide-Vilsmeier reagent. p3-Oxohexakis(p-... 

Vanadium oxyacetylacetonate (Vanadyl acetylacetonate), VO(CH3COCH2COCH2)2 [1, 1271, before Vilsmeier reagent]. Mol. wt. 265.16, m.p. 255°, dec. Supplier Alfa Inorganics. 

Vanadium tetrachloride, 332—333 Vanadyl acetylacetonate, 331 Vilsmeier reaction, 128 Vilsmeier reagents, 16, 321 Vinyl cyanides, 212 4-Vinylcyclohexene, 25, 209 Vinyl fluorides, 146 Vinyl halides, 186, 212-213 Vinylsilanes, 187... 

Apart from phenols and phenol-ethers, vanadium reagents were effective in the oxidative couplings of electron-rich heterocycles. Thus poly-3-hexylthiophene (404), with average 2.1 x lO" and head-to-tail content of about 65%, was prepared by oxidative polymerization of 3-hexylthiophene (405) with oxygen catalysed with vanadyl(IV)-acetylacetonate and iron(IIl) chloride in 60% yield [77], Scheme 21. 

Related Reagents. Bis(trimethylsilyl) Peroxide-Vanadyl Bis(acetylacetonate). 

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