Oxidation process
AssigneeShell Oil Company
InventorsLeo Kim, Timm E. Paxson, Sunny C. Tang
Life of this patent
Estimating the term…
Abstract
Meta-phenoxytoluene is oxidized by selenium dioxide in the presence of a dehydration agent to yield meta-phenoxy-benzaldehyde containing less than 250 ppm dissolved selenium at a selectivity based on the toluene of about 90% or better.
Claims7
In the process of oxidizing meta-phenoxytoluene selectively to meta-phenoxybenzaldehyde using selenium dioxide in the presence of an inert organic solvent at a temperature between about 150.degree. C and about 260.degree. C and at a pressure from about 5 to about 300 psig the improvement which comprises carrying out the reaction in the presence of a drying agent selected from the group consisting of MgSO.sub.4, CaCl.sub.2, silicas, aluminas, alumina-silicates and molecular sieves.
Dependencies are inferred from the claim text.