Rearrangement of prop-2-ynylic N-oxides to O-allenyl hydroxylamines

Abstract
Rearrangement of N-prop-2-ynylpiperidine N-oxide and N-prop-2-ynylmorpholine N-oxide to the corresponding O-allenyl hydroxylamines is reported; this rearrangement appears to be intramolecular proceeding by a cyclic mechanism.