Process for preparing 4-[(1,6-dihydro-6-oxo-2-pyrimidinyl)amino]benzonitrile
US8101752B2 · kind B2 · utility
1Cited by
9References
15Claims
0Family size
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Key dates
| Filing date | May 24, 2006 |
| Grant date | Jan 24, 2012 |
| Priority date | — |
| Expiry date | Jan 21, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D239/47
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to a process for preparing 4-[(1,6-dihydro-6-oxo-2-pyrimidinyl)-amino]benzonitrile (I) starting from a 4-oxo-1,6-dihydro-pyrimidinylcarboxylic acid ester (II) or starting from a guanidine derivative which is reacted with an alkoxy-methylene malonic acid ester to an ester (II) which is converted to (I), which reaction sequence may be a one-pot procedure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.