L= P (o-tol), or piperidine. volatile products were formed, although diamines could have been present in the" nonvolatile" material formed. It is clear that the piperidine group present in the diene is influencing the reaction significantly since (E)-lY4-hexadiene, the diene without the piperidine substituent, gave mainly (70%) amine adducts and could not have given more than 30% diene compared with the 55% obtained from the dienylpiperidine. ...
