# US 4,397,789 A · Alkyl-4-cyclooctenyl carbonates and uses thereof in augmenting or enhancing the aroma of perfume compositions, colognes and perfumed articles

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- Number: US 4,397,789 A
- Document ID: US4397789A
- Status: Granted
- Kind: A
- Application number: 06/409,718
- Filed: 1982-08-19
- Granted: 1983-08-09
- Earliest claimed: 1981-11-05
- Assignees: International Flavors & Fragrances Inc.
- Inventors: Richard M. Boden; Michael Licciardello
- Web page: https://patentgrep.com/patent/US4397789A

## CPC

- C11B 9/0049: {the condensed rings sharing two common C atoms}
- C11B: PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES (drying-oils C09F)

## Abstract

Described are the 4-cyclooctenyl lower alkyl carbonates reaction products including a major proportion of said 4-cyclooctenyl alkyl carbonates and a minor proportion of bicyclooctanyl carbonates having the structure: ##STR1## wherein R.sub.5 is methyl or ethyl, said mixture being produced by: first reacting 1,5-cyclooctadiene with formic acid to form a mixture of 4-cyclooctenyl formate in a major proportion and bicyclooctanyl formate in a minor proportion and then reacting the resulting mixture with an alkyl carbonate in the presence of an alkali metal alkoxide to form a mixture of compounds defined above and uses thereof in augmenting or enhancing the aroma of perfume compositions, colognes and perfumed articles such as solid or liquid anionic, cationic, nonionic or zwitterionic detergents, fabric softeners, fabric softener articles, hair sprays, shampoos, bath oils and perfumed polymers.

## Claims

### Claim 1

A 4-cyclooctenyl alkyl carbonate defined according to the structure: ##STR90## wherein R.sub.4 represents an alkyl group selected from the group consisting of methyl and ethyl.

### Claim 2 (depends on 1)

The 4-cyclooctenyl alkyl carbonate of claim 1 defined according to the structure: ##STR91##

### Claim 3 (depends on 1)

The 4-cyclooctenyl alkyl carbonate of claim 1 defined according to the structure: ##STR92##