Process for the preparation of amides

Details Process for the preparation of amides Process for the preparation of amides

C - Chemistry, Metallurgy

07

D

260/302, 260/266

C07D 277/48 (2006.01) C07D 417/12 (2006.01)

Patent

CA 1203238

IN THE CANADIAN PATENT AND TRADEMARK OFFICE PATENT APPLICATION entitled : Process for the preparation of amides. In the names of : Dino NISATO Sergio BOVERI Romeo RONCUCCI Paolo CARMINATI assignee: Société anonyme styled : SANOFI ABSTRACT OF THE DISCLOSURE A process for the preparation of amides of formula Image in which X represents a N?O or C-NH-A-B group, wherein A represents a CO or SO2 group and B represents an alkyl group of from 1 to 6 carbon atoms or a phenyl, pyridyl, pyridyl l-oxide, pyrazinyl or thi- enyl group, and of their pharmaceutcally acceptable acid addition salts which comprises reacting the 2-(2-guanidinothiazol-4-ylmethyl- thio)ethylamine of formula Image with a functional derivative of an acid of formula Image wherein X is as defined above, in an organic solvent at a tempera- ture of from 0°C and the boiling temperature of the employed solvent and optionally converting the product thus obtained into their pharmaceutically acceptable acid addition salts.

427748

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