Process for the preparation of phenylmalonic acid dinitriles
US10759742B2 · kind B2 · utility
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Key dates
| Filing date | Jul 20, 2017 |
| Grant date | Sep 1, 2020 |
| Priority date | — |
| Expiry date | Jul 20, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/824
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for the preparation of a compound of Formula (I), the process comprising the reaction of a compound of Formula (II) with malononitrile in the presence of a base and a palladium catalyst, Formula (II) wherein X, Y and Z, independently of each other, represent fluoro, chloro or C1-4alkyl; and L is a leaving group; with the proviso that 1 or 2 of X and Y are, independently of each other, fluoro or chloro.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.