Interesting, but neither accessible nor relevant to the average harmala enthusiast!
The gold has phosphine ligands, the starting material is an alkynyl azetidine, and it's not clear what the harmalidine would be useful for.
Quote:Gold-catalysed rearrangement: from N-3-methoxyphenyl alk-1-ynyldimethylazetidine C to pyrrolo[1,2-a]indole B
With these azetidines in hand, the gold-catalysed rearrangement was studied. Under our precedent optimized conditions,16 the expected 2,3-dihydropyrrolo[1,2-a]indoles were readily obtained but in modest yields due to some degradation. A brief condition screening revealed that 2-biphenyldicyclohexylphosphino-gold(I) hexafluoroantimonate was still the best catalyst but 1,2-dichloroethane (DCE) turned out to be better as solvent, while refluxing minimized degradation due to short reaction times.
Condensation of an alkyne with a substituted aniline is a common strategy in indole synthesis.
“There is a way of manipulating matter and energy so as to produce what modern scientists call 'a field of force'. The field acts on the observer and puts him in a privileged position vis-à-vis the universe. From this position he has access to the realities which are ordinarily hidden from us by time and space, matter and energy. This is what we call the Great Work."
― Jacques Bergier, quoting Fulcanelli