migration

Also contains definition of: bond migration
https://doi.org/10.1351/goldbook.M03920
  1. The (usually @[email protected]) transfer of an atom or @[email protected] during the course of a @[email protected]
  2. The movement of a bond to a new position, within the same @[email protected] is known as 'bond migration'. Allylic rearrangements, e.g.
    M03920.png
    exemplify both types of migration.
Source:
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1141 [Terms] [Paper]