Stereospecific conversion of N,N-dimethylamphetamine into N-methylpseudoephedrine
Blagg J., Davies SG.
The pro-R hydrogen of (+)-N,N-dimethylamphetamine chromium tricarbonyl can be stereospecifically substituted via sequential treatment with BunLi and an electrophile, with retention of configuration to give for example N-methylpseudoephedrine after decomplexation.