1,3-cyclobutanedione-bisketals, process for their production and their use
US5360937A · kind A · utility
3Cited by
6References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 22, 1993 |
| Grant date | Nov 1, 1994 |
| Priority date | — |
| Expiry date | Mar 22, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/515
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Bisketals of 1,3-cyclobutanedione with monovalent and divalent alcohols as well as processes for their production from 1,3-cyclobutanedione or from 3-acetoxy-2-cyclobuten-1-one contained in the distillation residues of the diketene production. The bisketals are suitable intermediate products for the production of squaric acid, for the production and/or purification of 1,3-cyclobutanedione, or as a stable form for storage or substitute for this unstable dione.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.