Birch reduction of pseudoephedrine. It was also found [in a second synthesis] that the ephedrine would reduce to methamphetamine without the addition of ammonium chloride as a quenching agent. Although the method was developed by Authur John Birch in 1944, the method has become more popularly known as the Nazi method. Methamphetamine production is the most common form of illicit drug manufacture in the United States. Jul 15, 2018 · In this study, 3 commercially available pseudoephedrine formulations were evaluated for ease of extraction and conversion to methamphetamine using a common chemistry technique called the one-pot method that is frequently employed by clandestine chemists. Dec 10, 2019 · One Pot method is its minimization – while the most effective Birch reduction method s o far needs at least 30 g of pseudo/ephedrine, the One Pot is enough to effectively carr y out the Jul 26, 2013 · The ‘‘Birch method’’ is a chemical reduction reaction to convert pseudoephedrine in base form into methamphetamine. . Methamphetamine production is the most common form of illicit drug manufacture in the United States. Furthermore, it was found that the reaction converted phenylpropanolamine to amphetamine and methylephedrine to dimethylamphetamine. Birch Reduction This document provides instructions for using the birch reduction method to produce methamphetamine from pseudoephedrine. The “one-pot” method is the most prevalent methamphetamine synthesis method and is a modified Birch reduction, reducing pseudoephedrine with lithium and ammonia gas generated in situ. epbav lrubqe icd lbysva mtz ipyp wwfzx feykspi ksxtko cnwey