Sarizotan Impurity3

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 5.07 g of (R)-2-aminomethylchroman and 5.00 g of 5-(4-fluorophenyl)-pyridine-3-carbaldehyde are dissolved in 38 ml of THF, and 6 g of 5% palladium on activated carbon are added with stirring. The mixture is hydrogenated at room temperature under atmospheric pressure with stirring. When the take-up of hydrogen is complete, the catalyst is filtered off, giving 8.66 g of (R)-(−)-2-[5-(4-fluorophenyl)-3-pyridylmethylaminomethyl]chroman by removal of the solvent by distillation (68% yield). is hydrogenated at room temperature under atmospheric pressure with stirring the catalyst is filtered off