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US 6,271,376 B1Granted
Process for the preparation of N-(amino-4,6-dihalo-pyrimidine) formamides
AssigneeLonza Ltd.
InventorsElie Saikali, Walter Brieden
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Abstract
A process for the preparation of N-(amino-4,6-dihalopyrimidine)formamides of the formula: in which X is a halogen atom, starting from 2,5-diamino-4,6-dihalopyrimidine of the formula: in which X has the meaning afore-mentioned, by reaction with formic acid.
Claims14
A process for the preparation of N-(amino-4,6-dihalopyrimidine)formamides of the formula:
- in which X is a halogen atom, comprising reacting a 2,5-diamino-4,6-dihalopyrimidine of the formula:
- in which X has the meaning mentioned above, with formic acid of sufficient strength to produce the N-(amino-4,6-dihalopyrimidine)formamide of formula I or with formic acid of sufficient strength to produce the N-(amino-4,6-dihalopyrimidine)formamide of formula II.
Dependencies are inferred from the claim text.