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US 5,478,960 AGranted
Process for the preparation of heterosubstituted acetals
AssigneeBayer Aktiengesellschaft
InventorsHeinz Landscheidt, Alexander Klausener
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Abstract
Heterosubstituted acetals of the formula ##STR1## can be obtained by reacting vinyl compounds of the formula CH.sub.2 .dbd.CH-A.sup.1 (II) with alkyl nitrites of the formula R.sup.1 --ONO (III.) The reaction is performed in the presence of palladium in metallic or bonded form and in alcohols or ethers as reaction medium at from 0.degree. to 120.degree. C.
Claims10
A process for the preparation of a heterosubstituted acetal of the formula ##STR5## in which R.sup.1 represents straight-chain or branched C.sub.1 -C.sub.8 -alkyl, and
- A.sup.1 represents a heteroatom from the group consisting of silicon, oxygen, sulphur, selenium, tellurium, nitrogen and phosphorus, which, carries one or more identical or different substituents selected from the group consisting of double-bonded oxygen, C.sub.1 -C.sub.8 -alkoxy, C.sub.1 -C.sub.8 -alkyl, aryloxy, substituted aryloxy, aryl and substituted aryl, and may in addition carry a positive charge,
- wherein a vinyl compound of the formula
- CH.sub.2 .dbd.CH--A.sup.1 (II),
- in which
- A.sup.1 has the above meaning,
- is reacted, in the presence of palladium in metallic or bonded form and in an alcohol or an ether or a mixture of two or more of them as reaction medium at from 0.degree. to 120.degree. C. with an alkyl nitrite of the formula
- R.sup.1 --ONO (III),
- in which
- R.sup.1 has the above meaning.
6 more elements
Dependencies are inferred from the claim text.