Process for the production of squaric acid
US5130492A · kind A · utility
2Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1991 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | Feb 7, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/673
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the production of squaric acid by halogenation either of pure 3-acetoxy-2-cyclobuten-1-one or of a distillation residue of diketene production containing 3-acetoxy-2-cyclobuten-1-one to a cyclobutenone of formula: ##STR1## and then hydrolysis of these cyclobutenones to squaric acid. The halogenated cyclobutenones are intermediate products in the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.