Process for the preparation of aldehydes and ketones
AssigneeConsortium fur Elektrochemische Industrie GmbH
InventorsElke Fritz-Langhals, Johannes Freudenreich
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Abstract
A process for the preparation of vinyl, alkynyl, aryl or heteroaryl aldehydes or vinyl, alkynyl, aryl or heteraoryl ketones includes reacting vinyl-, alkynyl-, aryl- and heteroarylmethyl and -methylene compounds with the aid of a mediator and an oxidant, wherein the mediator is selected from the group of the aliphatic, heterocyclic or aromatic NO, or NOH containing compounds.
Claims11
A process for the preparation of a heteroaryl aldehyde and a heteroaryl ketone comprising
- reacting a compound selected from the group consisting of heteroarylmethyl, and heteroarylmethylene with an oxidant and with the aid of a mediator in a reaction medium,
- wherein the mediator is selected from the group consisting of the aliphatic, heterocyclic and aromatic NO, or NOH containing compounds.
A process as claimed in 1, wherein the aldehyde and the ketone are each a compound of the formula 1, and the methyl compound and the methylene compound are each a compound of the formula 2
- where Y1 and Y2 can be identical or different and are radicals having up to 20 C atoms and up to 6 rings and at least one of the radicals Y1 or Y2 is heteroaryl, and Y1 and Y2 may also be part of a ring system;
- and
- with the proviso that whenever the compound of formula 1 is an aldehyde, Y1 or Y2 is hydrogen.
Dependencies are inferred from the claim text.