Fig. 7: Proposed reaction mechanism.
From: Mn(I)-catalyzed sigmatropic rearrangement of β, γ-unsaturated alcohols

Path a Mn(I)-catalyzed 1,3-STR via intramolecular ligand exchange and migratory insertion. Path b Mn(I)-catalyzed 1,3-STR via intramolecular Michael-addition.