Preparation of .alpha.,.omega.-aminoalcohols
AssigneeBASF SE
InventorsGerhard Koppenhoefer, Wolfgang Schroeder, Dieter Voges
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Abstract
Preparation of .alpha.,.omega.-aminoalcohols of the general formula I HO--CH.sub.2 --X--CH.sub.2 --NH.sub.2 (I), in which x denotes a C.sub.1 -C.sub.20 -alkylene chain optionally substituted by inert radicals and/or optionally interrupted by oxygen or nitrogen, by the reaction of .alpha.,.omega.-alkanediols of the general formula II HO--CH.sub.2 --X--CH.sub.2 --OH (II), in which the connecting member x has the meanings stated above, with ammonia and a catalyst at a temperature ranging from 150.degree. to 300.degree. C. and under a pressure of from 50 to 300 bar, wherein the catalyst used is one whose catalytically active material consists of iron to an extent of from 5 to 100% w/w.
Claims7
In a process for the preparation of .alpha.,.omega.-aminoalcohols of the formula I
- HO--CH.sub.2 --X--CH.sub.2 --NH.sub.2 (I),
- in which X denotes a C.sub.1 -C.sub.20 -alkylene chain optionally substituted by inert radicals and/or optionally interrupted by oxygen or nitrogen, by the reaction of .alpha.,.omega.-alkanediols of the formula II
- HO--CH.sub.2 --X--CH.sub.2 --OH (II),
- in which the connecting member X has the meanings stated above, with ammonia and a catalyst at a temperature ranging from 150.degree. to 300.degree. C. and under a pressure of from 50 to 300 bar, the improvement which comprises:
- carrying out the reaction by continuously passing the reaction mixture through a fixed-bed catalyst in which the catalytically active material consists of iron to an extent of from 5 to 100% w/w and of cobalt to an extent of from 0 to 95% w/w.
Dependencies are inferred from the claim text.