The configu ephedrine were determined by reduction of the chloro
PDF - Chemistry) Methamphetamine Synthesis
A completely different procedure of synthesis uses the of with , both of which are currently chemicals (as are pseudoephedrine and ephedrine). The reaction requires a catalyst that acts as a reducing agent, such as or platinum dioxide, also known as . This was once the preferred method of production by in , until DEA restrictions on the chemicals made the process difficult. Other less common methods use other means of hydrogenation, such as in the presence of a .
Reduction of Ephedrine to Methamphetamine Using Hypophosphorus ..
Most methods of illicit production involve of the group on the or molecule. Methamphetamine is most structurally similar to and amphetamine. The most common method for small-scale methamphetamine labs in the United States is primarily called the "Red, White, and Blue Process", which involves red , or (white), and (which is technically a purple color in elemental form), from which is formed. In Australia, criminal groups have been known to substitute "red" phosphorus with either hypophosphorous acid or phosphorous acid. This is a hazardous process for amateur chemists, because gas, a side-product from hydroiodic acid production, is extremely toxic to inhale.