I'm not so sure, hypo...
If ning were to make something like that, (mind ye, mescaline is something special) the fact of the matter is, allyl chloride/bromide may just bee easier for our bee here to make than methyl iodide or whatever s/he would use to make 3,4,5-TMB. And though I'm not so sure 'bout it, last I heard allyls were pretty tough buggers, and if something harsh as hell like LiAlH4 wouldn't touch it, I bet not much else our bee would throw at it would either.
Tryin, consider using EtBr as well. That's REALLY otc.