Tungsten(VI) Fluoride

WF6

[7783-82-6]  · F6W  · Tungsten(VI) Fluoride  · (MW 297.85)

(oxidant;1 Lewis acid1)

Alternate Name: tungsten hexafluoride.

Physical Data: mp 2.5 °C; bp 17.1 °C.

Solubility: sol nonpolar aprotic organic solvents, basic water.

Form Supplied in: gas.

Handling, Storage, and Precautions: corrosive; moisture sensitive.

Hydrolysis of N,N-Dimethylhydrazones and Tosylhydrazones.

Both N,N-dimethylhydrazones and tosylhydrazones are oxidatively hydrolyzed under neutral conditions by treatment with tungsten(VI) fluoride in chloroform/water at 0 °C (eq 1).1 Hydrazones of aromatic aldehydes and of aromatic and aliphatic ketones are readily hydrolyzed under these conditions. In virtually all cases the yield is greater than 80%. Using tungsten(VI) fluoride, the hydrolysis proceeds at lower temperature than with other methods.2


1. Olah, G. A.; Welch, J. S 1976, 809.
2. Corey, E. J.; Enders, D. TL 1976, 17, 3.

James W. Herndon

University of Maryland, College Park, MD, USA



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