Alpha chlorination process employing antioxidants
US4938898A · kind A · utility
0Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1984 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | Jun 29, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/62
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to improved processes for selectively chlorinating acyl compounds at the alpha or 2-position. The process of the present invention comprises a method of producing alpha-chloro acyl chlorides comprising contacting an acyl chloride with a chlorine source at a temperature of about 75.degree. C. to about 125.degree. C. in the presence of (i) an effective amount of an auxiliary acidic agent and (ii) an effective amount of a food grade antioxidant and optionally (iii) an effective amount of oxygen or air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.