Process for preparing...

C - Chemistry – Metallurgy – 07 – D

Patent

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C07D 207/12 (2006.01)

Patent

CA 2291665

A process for industrially preparing intermediates of aromatic amidine derivatives having anticoagulant activity (Japanese Patent Laid-Open No. 208946/1993), i.e., compounds represented by general formula (3) or salts thereof by the following reaction scheme (1), (2) and (3), wherein R1 represents H or an alkyl group; R2 represents H, an alkanoyl group, an alkoxycarbonyl group, an aralkyl group, an aralkyloxycarbonyl group or the like; and R3 represents H, an alkyl group, or an alkanoyl group.

Cette invention se rapporte à un procédé de préparation industrielle d'intermédiaires de dérivés aromatiques d'amidine possédant une activité anti-coagulatrice (brevet japonais n· 208946/1993), tels que les composés représentés par la formule générale (3) ou des sels de ces composés. Le procédé de préparation suit le schéma réactionnel décrit par la suite des trois formules (1), (2) et (3), dans lesquelles R?1¿ est H ou un groupe alkyle, R?2¿ est H, un groupe alkanoyle, un groupe alcoxycarbonyle, un groupe aralkyle, un groupe aralkyloxycarbonyle ou analogue; et R?3¿ est H, un groupe alkyle ou un groupe alkanoyle.

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