Producing method of (hydroxyalkyl) alicyclic carboxylic acids and intermediates for producing the same and producing method of such intermediates
US6444843B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2000 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Apr 3, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/39
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
(Acyloxyalkyl)aromatic carboxylic acids are produced by partial oxidation of alkyl substituted aromatic compounds which are represented by the following General Formula (1)CHR1R2—Ar—(R3)n  (1)(where Ar is an aromatic ring of two or greater valency, R1 is a hydrogen atom or alkyl group having a carbon number of 1 to 3, R2 is a hydrogen atom, alkyl group having a carbon number of 1 to 3, or —OCOR5 group, R3 is an alkyl group having a carbon number of 1 to 4, —COOH group, —CHO group, —CH2R4 group, or —COOR group, n is an integer of 1 to 5, R4 is a halogen atom, —OH group, or —OCOR5 group, and R5 is an alkyl group having a carbon number of 1 to 4), andcarboxylic acids in the presence of oxygen using a catalyst including an element which belongs to Group VIII of the periodic table. (Hydroxyalkyl)alicyclic carboxylic acids are produced by carrying out hydrogenation and hydrolysis using the (acyloxyalkyl)carboxylic acids as a starting material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.