NEP synthesis

[The Alchemist]

Does nep use the same precursor as a-pvp but with ethylamine instead of pryolidine or is it different precursor

Also, can I propose the search engine be modified? Restricting searches to characters over 5 seems unreasonable for a subject related to certain compounds referenced in three character increments.

 

[HerrHaber]

Yes quite the same as that but ethylamine instead of pyrrolidine is implied, same precursor for N-Et pentedrone analog as for @pvp. Toluene with valeroyl chloride and strong Lewis acid catalyst. Halogenation then reaction with ethylamine 70%a.q. Should afford product with traces of 2-methyl aryl substitution.