Process for the preparation of carbonyl compounds by cleavage of hydroxycarboxylic acids
US6506942B2 · kind B2 · utility
0Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2001 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | Oct 12, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/512
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process for the preparation of a carbonyl compound of the general formula (1)R1R2C═O  (1),in which a &bgr;-hydroxycarboxylic acid or its salt of the general formula (2)R1R2C(OH)—CR3R4—COOM  (2)is cleaved in the presence of a Brönstedt base which is selected from hydroxides, alkanolates, oxides, amides and hydrides of the alkali metals and alkaline earth metals, and in the presence of a hydroxyl-free solvent,R1, R2, R3, R4 and M having the meanings from claim 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.