Process for the production of unsubstituted or polysubstituted o-phthalaldehydes
US4206152A · kind A · utility
4Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 21, 1978 |
| Grant date | Jun 3, 1980 |
| Priority date | — |
| Expiry date | Dec 21, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/373
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a process for the production of unsubstituted or substituted o-phthalaldehydes by hydrolysis of .alpha.,.alpha., .alpha.',.alpha.'-tetrahalogeno-o-xylenes with a carboxylate in an aqueous medium in the presence of a phase transfer catalyst and an organic base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.