The Aryne [2,3] Stevens Rearrangement

Arynes are employed in the transition-metal-free
and mild [2,3]
Stevens rearrangement of tertiary allylic amines for the synthesis
of functionalized homoallylic amines in moderate to good yield with
a broad substrate scope. The key nitrogen ylide intermediate was generated
by the N-arylation of allyl amines using arynes.
Moreover, the reaction of chiral allyl amines with arynes resulted
in the enantiospecific synthesis of homoallylic amines. In addition,
preliminary studies on the [1,2] Stevens rearrangement is also presented.