For short: Friedel-Crafts acylation of toluene or benzene with pentanoyl chloride in pressence of anhydrous AlCl3 resulting in aryl n-pentyl-1-one that is brominated on position 2 here you have several options just beware that alpha halogenated ketones are notorious lachrimators, and this is reacted with methylamine prefferably in 2-methyl-pyrrolidone to yield your freebase that is gassed with hydrogen chloride in the nonpolar solvent that was extracted with to form your final crude solid product that is prefferably recrystalized before use. God luck and good speed!