Other Cycloaliphatic Compounds

In addition to cyclic terpenoids, several other cycloaliphatic compounds have above-average importance as fragrance materials some of them are structurally related to the terpenes. 

Ketones are most widely represented and include cyclopentanone derivatives, such as the jasmine fragrance substances, and cyclic ketones with 15-17-membered carbon rings, such as muscone and civetone, which are constituents of the extremely expensive animal products musk and civet. Cyclopentadecanone, a natural musk fragrance, and the unsaturated cyclohexadecen-l-ones have odor characteristics similar to those of muscone and civetone and are more easily synthesized. They are, therefore, often used as substitutes. 

Some alicyclic alcohols are important as synthetic sandalwood fragrances. A few alicyclic aldehydes are valuable perfume materials and are obtained by Diels-Alder reactions using terpenes and acrolein. Esters derived from hydrogenated aromatic compounds, such as terr-butylcyclohexyl acetate, are also used in large amounts as fragrance materials. 

This powerful fragrance and flavor substance is used in perfume and aroma compositions. 

Trade Name. Sulfox (Firmenich). l-/ -Menthene-8-thiol [71159-90-5] 

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