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US 2003/0171622 A1Published application
Method for producing dicarbonyl compounds
AssigneeLonza Ltd.
InventorsUta Glufke, Paul Hanselmann
Life of this patent
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Abstract
The invention relates to a method for producing α-dicarbonyl compounds of formula (I), wherein R1 and R2, independently of each other, mean C1-6-alkyl. Said method is characterised in that an α,β-unsaturated ketone of formula (II), wherein R1 and R2 have the meaning above and R3 and R4, independently of each other, mean hydrogen, C1-6-alkyl or di-C1-6-alkylamino, is reacted with ozone and the resulting ozonide is treated reductively.
Claims3
Process for the preparation of α-dicarbonyl compounds of the formula
- 3
- in which R1 and R2, independently of one another, are C1−6-alkyl,
- characterized in that an α,β-unsaturated ketone of the formula
- 4
- in which R1 and R2 have the meaning given above, and R3 and R4, independently of one another, are hydrogen, C1−6-alkyl or di-C1−6-alkylamino, is reacted with ozone, and the ozonide formed is worked-up reductively:
2 more elements
Dependencies are inferred from the claim text.