Novel dioxaspiro compounds and their use in perfume compositions

The present invention relates to new chemical entities and the incorporation and use of the new chemical entities as fragrance materials.

There is an ongoing need in the fragrance industry to provide new chemicals to give perfumers and other persons the ability to create new fragrances for perfumes, colognes and personal care products. Those with skill in the art appreciate how differences in the chemical structure of the molecule can result in significant differences in the odor, notes and characteristics of a molecule. These variations and the ongoing need to discover and use the new chemicals in the development of new fragrances allow the perfumers to apply the new compounds in creating new fragrances.

The present invention provides novel chemicals, and the use of the chemicals to enhance the fragrance of perfumes, toilet waters, colognes, personal products and the like. In addition, the present invention is directed to the use of the novel chemicals to enhance fragrance in perfumes, toilet waters, colognes, personal products and the like.

More specifically, the present invention is directed to the fragrance compounds and a method of improving, enhancing or modifying a fragrance formulation through the addition of an olfactory acceptable amount of dioxaspiro compounds represented by Formula I set forth below:

wherein m is 1 or 2;

and if m is 1, which provides a five-membered dioxaspiro ring, n is an integer from 2 to 4, and the methyl group in the dioxaspiro ring is independently located in the 2 and/or 3 positions of the dioxaspiro ring;

or if m is 2, which provides a six-membered dioxaspiro ring, n is an integer from 0 to 6, and the methyl group in the dioxaspiro ring is independently located in the 2, 3, and/or 4 positions of the dioxaspiro ring.

Another embodiment of the invention is directed to a method for enhancing a perfume composition by incorporating an olfactory acceptable amount of the dioxaspiro compounds provided above.

These and other embodiments of the present invention will be apparent by reading the following specification.

In Formulae I above, m is 1 or 2; and if m is 1, which provides a five-membered dioxaspiro ring, n is an integer from 2 to 4, and the methyl group in the dioxaspiro ring is independently located in the 2 and/or 3 positions of the dioxaspiro ring; or if m is 2, which provides a six-membered dioxaspiro ring, n is an integer from 0 to 6, and the methyl group in the dioxaspiro ring is independently located in the 2, 3, and/or 4 positions of the dioxaspiro ring.

It is known to those with the skill in the art that Formula I provides a structure containing five-membered ring when m is 1 and a structure containing a six-membered ring when m is 2.

In another embodiment of the invention, the novel compounds of the invention are represented by the following structures:

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Perfume compositions

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