The Sommelet-Hauser rearrangement is a rearrangement reaction of certain benzyl quaternary ammonium salts . The reagent is sodium amide or another alkali metal amide and the reaction product a N-dialkyl benzyl amine with a new alkyl group in the aromatic ortho position.
This reaction was named after M. Sommelet and Charles R. Hauser
== Mechanism ==
The benzylic methylene proton is acidic and deprotonation takes place to the ylide. The second step is a 2,3-sigmatropic rearrangement.
== References ==