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1. (WO1981000204) NOUVEAUX PYRANNES SUBSTITUES AU NORBORNYLE, LEUR PROCEDE DE SYNTHESE ET LEUR USAGE EN PARFUMERIE
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique
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Claims

1. A norbornyl-substituted pyran of the formula:
i



wherein the wavy line represents either a carbon-carbon single bond or a carbon-carbon double bond; and wherein the dashed lines represent either a carbon-carbon single bond or a carbon-carbon double bond such that two of the three dashed lines represent carbon-carbon single bonds ; and wherein each R' and R" , when taken separately, is either hydrogen or a methyl group.

2. A norbornyl-substituted pyran according to claim 1 having the structure:



3. A norbornyl-substituted pyran according to claim 1 having the structure:


4 . A norbornyl-substituted pyran according to claim 3 having the structure :


5. A norbornyl-substituted pyran according to claim 3 having the structure :



6. A fragrance composition which comprises a norbornyl-substituted pyran of the formula:



wherein the wavy line represents either a carbon-carbon single bond or a carbon-carbon double bond;
and wherein the dashed lines represent either a carbon-carbon single bond or a carbon-carbon double bond such that two of the three dashed lines represent carbon-carbon single bonds; and wherein each R' and R" , when taken separately, is either hydrogen or a methyl group in combination with conventional fragrance ingredients, said pyran being present in an amount effective to impart fragrance to said composition.

7. A fragrance composition in accordance with claim 6 wherein said effective fragrance-imparting
amount is an amount from about 0.1% to about 80% by weight of said compound based upon the weight of
said composition.

8. A fragrance composition according to claim 6 wherein said norbornyl-substituted pyran has the
structure:


9. A fragrance composition in accordance with claim 8 wherein said effective fragrance-imparting
amount is an amount from about 0.1% to about 80% by weight of said compound based upon the weight of said composition.

10. A fragrance composition according to claim 6 wherein said norbornyl-substituted pyran has the structure



11. A fragrance composition in accordance with claim 10 wherein said effective fragrance-imparting amount is an amount from about 0.1% to about 80% by weight of said compound based upon the weight of said composition.