Claims
- 1. A process for the preparation of a diacyloxyalkadiene of the formula ##STR6## where R.sup.1 to R.sup.5 are each hydrogen or a hydrocarbon radical of 1 to 6 carbon atoms, R.sup.6 is hydrogen or a hydrocarbon radical of 3 to 9 carbon atoms having one or more non-conjugated double bonds, and R.sup.7 is hydrogen or alkyl of 1 to 5 carbon atoms, and in the case in which R.sup.6 is hydrogen, one or more of R.sup.1 to R.sup.5 are R.sup.8 --CH.sub.2 -- where R.sup.8 is a hydrocarbon radical of 2 to 5 carbon atoms having one or more non-conjugated double bonds, which process comprises:
- reacting an aliphatic triene of the formula ##STR7## where R.sup.1 to R.sup.6 have the meanings given above, with a carboxylic acid of the formula
- R.sup.7 --COOH III,
- where R.sup.7 has the meaning given above, and with oxygen at an elevated temperature in the presence of a catalyst which contains palladium, platinum or salts of these metals.
- 2. A process as claimed in claim 1 wherein the initial reactant II and the final product I each contain two or three non-conjugated double bonds and R.sup.7 is hydrogen or alkyl of 1 to 3 carbon atoms.
- 3. A process as claimed in claim 1 wherein the catalyst contains, as active components, platinum or palladium and at least one metal selected from the group consisting of copper and tellurium.
- 4. A process as claimed in claim 3 wherein the active catalyst components consist essentially of from 1 to 10% by weight of platinum or palladium, up to 30% by weight of copper and up to 10% by weight of tellurium, based on the catalyst weight.
- 5. A process as claimed in claim 3 wherein the active catalyst components are applied to a carrier to provide a supported catalyst.
- 6. A process a claimed in claim 5 wherein the total quantity of the catalytically active metals applied to the carrier is about 0.01 to 30% by weight, based on the supported catalyst.
- 7. A process as claimed in claim 6 wherein the supported catalyst contains up to 6 gram atoms of copper and up to 1 gram atom of tellurium per gram atom of platinum or palladium.
- 8. A process as claimed in claim 1 wherein the reaction is carried out in the liquid or gas phase at about 70.degree. to 180.degree. C.
- 9. A process as claimed in claim 3 wherein the reaction is carried out in the liquid phase at about 70.degree. to 110.degree. C.
- 10. A process as claimed in claim 3 wherein the reaction is carried out in the gas phase at about 120.degree. to 150.degree. C.
- 11. A process as claimed in claim 7 wherein the supported catalyst contains, per gram atom of platinum or palladium, from 1 to 3.5 gram atoms of copper and/or from 0.01 to 1 gram atoms of tellurium.
- 12. A process as claimed in claim 7 carried out in the liquid or gas phase at a temperature of about 70.degree. to 180.degree. C.
- 13. A process as claimed in claim 12 wherein the supported catalyst contains, per gram atom of platinum or palladium, from 1 to 3.5 gram atoms of copper and/or from 0.01 to 1 gram atom of tellurium.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3101002 |
Jan 1981 |
DEX |
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Parent Case Info
This is a division of application Ser. No. 330,091 filed Dec. 14, 1981.
US Referenced Citations (7)
Divisions (1)
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Number |
Date |
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Parent |
330091 |
Dec 1981 |
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