... about 4-MTA:
http://www.gtfch.org/tk/tk68_1/Weise.pdf (http://www.gtfch.org/tk/tk68_1/Weise.pdf)
and something from Prof. Beller, University of Rostock:
http://forkat.anorg.chemie.tu-muenchen.de/2/pdf/f2be00b5.pdf (http://forkat.anorg.chemie.tu-muenchen.de/2/pdf/f2be00b5.pdf)
C. G. Hartung, C. Breindl, A. Tillack, M. Beller,
Tetrahedron 2000, 56, 5157 5162;
A Base-Catalyzed Domino-Isomerization-Hydroamination Reaction
A New Synthetic Route to Amphetamines