反应详情

Analogously to Example 4, a solution of 45 g of crude α-[N-benzyl-N-[2-(3-carbamoyl-4-hydroxy-phenoxy)-ethyl]-aminomethyl]benzyl alcohol in 500 ml of methanol is hydrogenated with the addition of 5 g of palladium-on-charcoal catalyst (5%) and the reaction mixture is worked up. α-[N-[2-(3-Carbamoyl-4-hydroxy-phenoxy)-ethyl]aminomethyl]-benzyl alcohol with a melting point of 174°-175° (from ethanol) is obtained. The methanesulfonate melts at 182°-183° (from methanol).