Processes for preparing 3,5,6-trichlorosalicylic acid and esters thereof
US4308395A · kind A · utility
6Cited by
2References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 11, 1980 |
| Grant date | Dec 29, 1981 |
| Priority date | — |
| Expiry date | Jul 11, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C69/88
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An improved single-pot process for synthesis of 3,5,6-trichlorosalicylic acid and esters thereof is described. Salicylic acid is chlorinated first in concentrated sulfuric acid and then with iodine catalyst to make the trichlorosalicylic acid which is extracted and then reacted with an alcohol to make the ester.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.