from l- ephedrine, respectively, R d- or ephedrine - manufacturing method (methamphetamine) N, α- dimethyl phenethylamine - (+) - (-) - S N, α- dimethyl phenethylamine or (Reb methamphetamine)

摘要

Of formula III d- or ephedrine of formula IV from l- ephedrine, R - (-) - N, α- dimethyl phenethylamine S (Reb methamphetamine, Formula I) or - (+) - N, α- dimethyl phenethyl amine (methamphetamine , A process for the preparation of formula II), the reaction mixture containing the formula VI or formula V the N- acylated ephedrine was acylated with an acylating agent of formula IV or d- the l- ephedrine base (a) or Formula III The acid hydrolysis comprising the steps of producing, the method of preparing the compound of formula VIII or formula VII with deoxygenated N- acylated ephedrine and (b) using the Raney nickel catalyst, deoxygenation product of (c) above the method comprising the steps of: obtaining a methamphetamine or methamphetamine Lev by decomposition.