[EN] PROCESS FOR THE PRODUCTION OF 2-[4-(3- OR 2-FLUOROBENZYLOXY)BENZYLAMINO]PROPANAMIDES WITH HIGH PURITY DEGREE<br/>[FR] PROCÉDÉ DE PRODUCTION DE 2-[4-(3- OU 2-FLUOROBENZYLOXY)BENZYLAMINO] PROPANAMIDES D'UN DEGRÉ DE PURETÉ ÉLEVÉ
申请人:NEWRON PHARM SPA
公开号:WO2009074478A1
公开(公告)日:2009-06-18
A process for obtaining therapeutically active 2-[4-(3- and 2-(flurobenzyloxy)benzylamino]propanamides, and their salts with pharmaceutically acceptable acids with high purity degree, in particular, with a content of dibenzyl derivatives impurities lower than 0.03%, preferably lower than 0.01% by weight. The process is carried out by submitting the Schiff bases intermediates 2- [4 -(3- and 2-fluorobenzyloxy)benzylideneamino]propanamides to a reduction reaction with a reducing agent selected from sodium borohydride and potassium borohydride in an appropriate amount of an organic solvent selected from C1-C5 lower alkanols, allowing the formation and presence during a substantial position of the reduction reaction course of a suspension of the Schiff base into the saturated solution of the Schiff base into the same organic solvent.
PROCESS FOR THE PRODUCTION OF 2-[4-(3- AND 2-FLUOROBENZYLOXY) BENZYLAMINO] PROPANAMIDES
申请人:BARBANTI ELENA
公开号:US20120157712A1
公开(公告)日:2012-06-21
A process for obtaining therapeutically active 2-[4-(3- and 2-(fluorobenzyloxy)benzylamino]propanamides and their salts with pharmaceutically acceptable acids with high purity degree, in particular, with a content of dibenzyl derivatives impurities lower than 0.03%, preferably lower than 0.01% by weight.
The process is carried out by submitting the Schiff bases intermediates 2-[4-(3- and 2-fluorobenzyloxy)benzylideneamino]propanamides to catalytic hydrogenation in the presence of a heterogeneous catalyst in a protic organic solvent.
Process for the production of 2-[4-(3- and 2-fluorobenzyloxy) benzylamino] propanamides
申请人:Newron Pharmaceuticals S.p.A.
公开号:US08076515B2
公开(公告)日:2011-12-13
A process for obtaining therapeutically active 2-[4-(3- and 2-(fluorobenzyloxy)benzylamino]propanamides and their salts with pharmaceutically acceptable acids with high purity degree, in particular, with a content of dibenzyl derivatives impurities lower than 0.03%, preferably lower than 0.01% by weight.
The process is carried out by submitting the Schiff bases intermediates 2-[4-(3- and 2-fluorobenzyloxy)benzylideneamino]propanamides to catalytic hydrogenation in the presence of a heterogeneous catalyst in a protic organic solvent.
HIGH PURITY 2-[4-(3- OR 2-FLUOROBENZYLOXY)BENZYLAMINO] PROPANAMIDES AND METHODS OF USE THEREOF
申请人:Newron Pharmaceuticals S.p.A.
公开号:US20140051758A1
公开(公告)日:2014-02-20
A process for obtaining therapeutically active 2-[4-(3- and 2-(fluorobenzyloxy)benzylamino]propanamides, and their salts with pharmaceutically acceptable acids with high purity degree, in particular, with a content of dibenzyl derivatives impurities lower than 0.03%, preferably lower than 0.01% by weight. The process is carried out by submitting the Schiff bases intermediates 2-[4-(3- and 2-fluorobenzyloxy)benzylideneamino]propanamides to a reduction reaction with a reducing agent selected from sodium borohydride and potassium borohydride in an appropriate amount of an organic solvent selected from C
1
-C
5
lower alkanols, allowing the formation and presence during a substantial position of the reduction reaction course of a suspension of the Schiff base into the saturated solution of the Schiff base into the same organic solvent.