Back to results
US 6,632,787 B1Granted
Carbonyl compounds, methods of making the same, and their use as fragrances and fragrance-enhancing additives
AssigneeCognis Deutschland GmbH & Co. KG
InventorsThomas Markert, Ute Lemke, Elke Veit, Theo Ten Pierik, Ralph Nemitz, Volker Porrmann, Marc Speitkamp
Life of this patent
Estimating the term…
Abstract
Carbonyl compounds derived from the reaction of alkyl cyclopentenols and vinyl ethers are described. The carbonyl compounds described have excellent fragrance properties, and their use as fragrances and/or fragrance-enhancing compounds is also described. Processes for the preparation of the carbonyl compounds are described as well.
Claims15
A compound corresponding to general formula (I):
- wherein R1 represents a hydrogen atom or a C1-5 alkyl group, wherein each of R2 and R3 independently represents a hydrogen atom or a C1-3 alkyl group, wherein a carbon-carbon double bond is present in a position selected from the group consisting of C1/C2, C2/C3 and C1/C6;
- and wherein R4 represents a hydrogen atom or a C1-3 alkyl group when the carbon-carbon double bond is present in the C2/C3 position.
A process for preparing compounds corresponding to general formula (I):
- wherein R1 represents a hydrogen atom or a C1-5 alkyl group, wherein each of R2 and R3 independently represents a hydrogen atom or a C1-3 alkyl group, wherein a carbon-carbon double bond is present in a position selected from the group consisting of C1/C2, C2/C3 and C1/C6;
- and wherein R4 represents a hydrogen atom or a C1-3 alkyl group when the carbon-carbon double bond is present in the C2/C3 position;
- said process comprising:
- (a) providing an alkyl cyclopentenol according to general formula (II):
- wherein R1 and R4 are as defined above;
- (b) providing a vinyl ether according to general formula (III):
- wherein R2 and R3 are as defined above, and wherein the Alkyl group represents a linear or branched C1-10 alkyl or cycloalkyl group;
- and
- (c) reacting the alkyl cyclopentenol and the vinyl ether.
6 more elements
A perfume composition comprising a compound according to general formula (I):
- wherein R1 represents a hydrogen atom or a C1-5 alkyl group, wherein each of R2 and R3 independently represents a hydrogen atom or a C1-3 alkyl group, wherein a carbon-carbon double bond is present in a position selected from the group consisting of C1/C2, C2/C3 and C1/C6;
- wherein R4 represents a hydrogen atom or a C1-3 alkyl group when the carbon-carbon double bond is present in the C2/C3 position, and wherein the compound is present in an amount of from 1 to 70% by weight, based on the weight of the perfume composition.
Dependencies are inferred from the claim text.