The invention discloses a method for preparing
rasagiline which has simple and convenient operation and is suitable for industrialized production. In the method, primary amine group on 1-indan amine is protected by o-Nos, and the 1-indan amine removes the
protecting group after the 1-indan amine is substituted by
propargyl chloride (or
propargyl bromide); compared with the prior method, two steps of reactions are added in the method, but after the 1-indan amine is protected by the o-Nos, the reaction specificity of the 1-indan amine and the
propargyl chloride (or the
propargyl bromide) is greatly improved; and the
protecting group can be easily removed after reaction without other side effects, so a
single product is generated. Besides, raw materials and reaction
reagent used in the method is cheap and easily obtained. The method has the advantages of simple and easy operation, mild reaction condition, easy control, good reaction selectivity, total yield improvement and cost reduction, and has excellent industrialized prospect.