Process for the production of tetronic acid
US4414400A · kind A · utility
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2References
13Claims
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Key dates
| Filing date | Jun 14, 1982 |
| Grant date | Nov 8, 1983 |
| Priority date | — |
| Expiry date | Jun 14, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D307/60
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for the production of tetronic acid from 4-haloacetoacetic ester. The 4-haloacetoacetic ester is transformed into the corresponding 4-tertiary-butoxyacetoacetic ester and the latter is converted by cyclizing ether cleavage into tetronic acid. Preferably the cyclizing ether cleavage is carried out thermolytically at a temperature above 100.degree. C. or is carried out by treatment with an acid at a temperature of 0.degree. to 30.degree. C. Tertiary-butoxyacetoacetic acid ethyl ester is a new compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.