Preparation of aliphatic and cycloaliphatic oximes
AssigneeBASF SE
InventorsNorbert Rieber, Peter Lingelbach, Tom Witzel, Ulrich Muller
Life of this patent
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Abstract
Aliphatic or cycloaliphatic oximes are prepared by treating aliphatic or cycloaliphatic imines with oxygen or with an oxygen-containing gas in the presence of a catalyst.
Claims6
A process for the preparation of an aliphatic or cycloaliphatic oxime, wherein-an aliphatic or cycloaliphatic imine is treated with oxygen or with an oxygen-containing gas in the presence of a member selected from the group consisting of a titanium, zirconium and hafnium-containing compound, or the salts, oxides and organometallics of these compounds, with the exception of a catalyst of the formula I
- (Ti.sub.x (m*D.sub.1-x)(2n/3*E.sup.1-x))O.sub.2 (I)
- where D is silicon or germanium, E is cerium or aluminum and x is from 0.06 to 0.9 and mm is 1 when n is 0 or m is 0 when n is 1.
A process for the preparation of an aliphatic or cycloaliphatic oxime, wherein the following steps are carried out:
- a) imination of an aliphatic or cycloaliphatic ketone with ammonia in a manner known per se and
- b) oxidation of the imine obtained in stage a) with oxygen or with an oxygen-containing gas in the presence of a member selected from the group consisting of a titanium, zirconium and hafnium-containing compound, or the salts, oxides and organometallics of these compounds, with the exception of a catalyst of the formula I
- Ti.sub.x (m*D.sub.1-x)(2n/3*E.sup.1-x)!O.sub.2 (I)
- where D is silicon or germanium, E is cerium or aluminum and x is from 0.06 to 0.9 and m is 1 when n is 0 or m is 0 when n is 1, to give the corresponding oxime.
Dependencies are inferred from the claim text.