Process for the preparation of diacyl-dianhydro hexitols
US4820852A · kind A · utility
0Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1988 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Mar 31, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D303/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The subject of the invention is an improved process for the industrial scale preparation of the compounds of the formula ##STR1## and salts thereof by acylating the hexitols of the formula (II) with an anhydride of the formula (II) at a temperature of 0.degree.-30.degree. C. in the presence of an organic base and a catalyst of the formula (IV) in a dipolar-aprotic or aprotic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.