Chemical Sciences: A Manual for CSIR-UGC National Eligibility Test for Lectureship and JRF/Named Reactions/Hofmann-Loffor-Freytage Reaction
An example is the synthesis of n-butylpyrrolidine:
The reaction type is a radical substitution. In the first step the halogen atom migrates from nitrogen to a gamma or delta carbon position in a rearrangement reaction.
A conceptually related reaction is the Barton reaction.