Synthesis:
1. Formic acid (3,66 g), NMF (7,6 g) and PMK (9.0 g) were refluxed at 150-170 *C for 7 h with additional formic acid (7,32 g) added periodically.
2. On cooling, a clear yellow solution of N-formyl-3,4-methylenedioxymethylamphetamine (N-formylMDMA) was obtained.
3. Concentrated...