Thanks, we have made 4mmc before successfully, but we can barely find any information and synthesis about NEP. But we will try it until we can make it, and gonna share with you if interested.
As I asked some people here are the reagents step by step so far:
1. 2-bromo valerophenone
2. Ethylamine 70%
3. DCM (Methylene Chloride)
4. MgSO4 (Magnesium Sulfate)
5. NMP (optional for faster and higher yielding)
6. acetone
7. HCL conc. 37% (Hydrochloric Acid 37% Solution)
On quantities, I...