The regioselective photochemical rearrangement of α-[PNtBu]4†
Abstract
The photochemical dyotropic (two-bond shift) rearrangement of the phosphazane cage α-[PNtBu]4 (1α) into the isomer β-[PNtBu]4 (1β) occurs via a multi-step radical mechanism; the structures of the α and β isomers are directly analogous to isovalent α- and β-As4S4 and P4S4.