Process for the production of malonic acid anhydride
US5210222A · kind A · utility
50Cited by
2References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1992 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Jan 21, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/54
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process, which is harmless with respect to safety, for the production of malonic acid anhydride. For this purpose, diketene is ozonized in the presence of a suitable carbonyl compound. Malonic acid anhydride is a highly reactive intermediate product for the synthesis of numerous active ingredients for, e.g., pharmaceutical agents, pesticides or dyes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.