Process for the preparation of 1-(pyrimidin-2-yl)propan-2-ones
US7141670B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Oct 9, 2002 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Feb 4, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D239/52
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of 1-(pyrimidin-2-yl)propan-2-ones of general formula (I), in which R is in each case a C1-10-alkyl group, a C3-8-cycloalkyl group, an alkyl group or an aryl-C1-4-alkyl group. For this, a malondiimidate of the general formula (II), in which R has the meaning given above, is reacted with diketene. The compounds which can be prepared according to the invention are intermediates for the synthesis of agrochemical active ingredients.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.