Flavouring a foodstuff by incorporating an effective amount of at least one compound of the formula R1-S-R2 in which R1 and R2 represent a specific atom or group
US7771769B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2001 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Sep 29, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C327/30
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
NEW MATERIAL: A compound of formula I (R is 1˜6C alkyl other than ethyl, 2˜6C alkenyl).EXAMPLE: 2-Methyl 2-mercaptopropionate.USE: A durable flavor and taste imparting agent usable for foods, drinks, cosmetics, healthy and hygienic use, medicines, etc.PROCESS: A 2-mercaptopropionic acid of formula II (R′ is H, 1˜6C alkyl or 2˜6C alkenyl) is esterified with an aliphatic alcohol of the formula R′(OH) in the presence of a catalyst, e.g. an inorganic acid such as sulfuric acid or organic acid such as acetic acid, in an azeotropic solvent, e.g. benzene, at 60˜100° C. to give the compound of formula I easily in high purity and yield. The molar amount of the aliphatic alcohol to be used is 1˜20 times, preferably 2˜5 times, that of the compound of formula II. The amount of the catalyst to be used is 0.1˜10 wt % based on the compound of formula II.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.