I'm also lost on the 'simplified' naming of these compounds past IUPAC, but can at least help you out on one thing...
"phenethylamines/amphetamines"
well a phenethylamine is a benzene ring attached to ethylamine (ch3ch2nh2).
Amphetamine is a phenethylamine which has a methyl group on the alpha carbon (First carbon next to the amine). This gives it the name A(lpha)M(ethyl)Ph(en)ET(hyl)AMINE - AMPHETAMINE.
The alpha methyl ethylamine could also be considered as a 2-aminopropyl group if you think about it...
"phenethylamines/amphetamines"
well a phenethylamine is a benzene ring attached to ethylamine (ch3ch2nh2).
Amphetamine is a phenethylamine which has a methyl group on the alpha carbon (First carbon next to the amine). This gives it the name A(lpha)M(ethyl)Ph(en)ET(hyl)AMINE - AMPHETAMINE.
The alpha methyl ethylamine could also be considered as a 2-aminopropyl group if you think about it...