# US 2021/0276941 A1 · Carboxylic acid ester compound, method for producing the same, composition, and, fragrance composition

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- Number: US 2021/0276941 A1
- Document ID: US20210276941A1
- Status: Published application
- Kind: A1
- Application number: 17/259,424
- Filed: 2019-05-28
- Published: 2021-09-09
- Earliest claimed: 2018-07-13
- Assignees: Mitsubishi Gas Chemical Company, Inc.
- Applicants: Mitsubishi Gas Chemical Company, Inc.
- Inventors: Yutaka MATSUURA; Tomohiko HAKAMATA
- Web page: https://patentgrep.com/patent/US20210276941A1

## CPC

- C07C 69/753: of polycyclic acids
- C07C 67/38: by addition to an unsaturated carbon-to-carbon bond
- C11B 9/0049: {the condensed rings sharing two common C atoms}
- C07C 2601/04: with a four-membered ring
- C07C 2602/44: the bicyclo ring system containing eight carbon atoms
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- 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

The present invention provides a carboxylic acid ester compound represented by formula (1) that is useful as a fragrance component or as a formulated fragrance material, wherein R1 is —COOR, wherein R is an alkyl group having 1 to 4 carbon atoms.

## Claims

### Claim 1

A carboxylic acid ester compound represented by formula (1),
wherein R1 is —COOR, wherein R is an alkyl group having 1 to 4 carbon atoms.

### Claim 2 (depends on 1)

A fragrance composition comprising the carboxylic acid ester compound according to claim 1.

### Claim 3 (depends on 1)

A composition comprising the carboxylic acid ester compound according to claim 1.

### Claim 4 (depends on 3)

The composition according to claim 3, for use in cosmetics, food additives, or cleaning compositions.

### Claim 5

A method for producing a carboxylic acid ester compound represented by formula (1), comprising a step of reacting β-caryophyllene represented by formula (2) with carbon monoxide and then a monohydric alcohol having 1 to 4 carbon atoms in the presence of hydrogen fluoride,
wherein R1 is —COOR, wherein R is an alkyl group having 1 to 4 carbon atoms.