Claims
- 1. A process for the preparation of a 5-cyanovalerate (I) by the carbonylation of a 1-cyanobutene with carbon monoxide and a C.sub.1 -C.sub.12 -alkanol (II) corresponding to the ester radical, at a temperature of from 130.degree. to 200.degree. C. and under superatomospheric pressure in the presence of a cobalt catalyst selected from the group consisting of dicobalt octacarbonyl, cobalt carbonyl hydrogen, cobalt acetate, cobalt formate, cobalt-2-ethyl hexanote, cobalt valerate, cobalt adipate and cobalt methyl glutarate and in the presence of an activating solvent of the formula III
- R.sub.2 N--CO--NR.sub.2 III
- in which the radicals R may be the same or different and stand for C.sub.1 -C.sub.6 -alkyl groups which may be interconnected to form a cyclic urea having a 5-membered to 7-membered ring or C.sub.5 -C.sub.7 -cycloalkyl groups, the initial concentration of the activating solvent in the total reaction mixture being from 35 to 65 wt %.
- 2. A process of claim 1, wherein the initial concentration of the activating solvent in the total reaction mixture being from 40 to 50 wt %.
- 3. A process of claim 1, wherein the alkanol (II) is methanol or ethanol.
- 4. A process of claim 2, wherein the alkanol (II) is methanol or ethanol.
Priority Claims (1)
Number |
Date |
Country |
Kind |
43 06 507.4 |
Mar 1993 |
DEX |
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Parent Case Info
The instant application is a continuation-in-part of application Ser. No. 08/203,022, filed Feb. 28, 1994, now U.S. Pat. No. 5,434,290.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4950778 |
Burke et al. |
Aug 1990 |
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5434290 |
Stahl et al. |
Jul 1995 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
203022 |
Feb 1994 |
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