Process for preparing malonic esters
US6350898B1 · kind B1 · utility
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Key dates
| Filing date | Jan 10, 2000 |
| Grant date | Feb 26, 2002 |
| Priority date | — |
| Expiry date | Jan 10, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/11
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Malonic esters of the general formula where R is C1-10-alkyl, C3-10-alkenyl or aryl-C1-4-alkyl, are prepared by reacting an alkali metal salt of malonic acid with a halide of the general formula R—X (II), where R is as defined above and X is chlorine, bromine or iodine, in the presence of water and a phase-transfer catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.