Prins-Pinacol Rearrangement :
The formation of oxacyclic and carbocyclic ring systems by terminating Prins cyclizations with the pinacol rearrangement in a tandem fashion is known as the Prins-pinacol rearrangement.
Rearrengment Reaction
Smiles Rearrangement Reaction : Mechanism , Application and Modification
Hello, here is the Smiles Rearrangement Reaction type of nucleophilic aromatic substitution with mechanism, examples, and modification.
The Stevens Rearrangement:
Stevens rearrangement is a base-promoted [1,2]-migration rearrangement of quaternary ammonium salts or sulfonium salts to the corresponding tertiary amines or sulfides. Stevens rearrangement involves the [1,2]-migration of one of the groups on the nitrogen or sulfur atom.
Aza-[2,3]-Wittig Rearrangement: Mechanism | Examples
The rearrangements reactions are important Name reaction in organic chemistry. Wittig rearrangement, first reported by G. Wittig and L. Löhmann in 1942, The Wittig rearrangement converts α-metalated ethers to metal alkoxides, yielding secondary or tertiary alcohols. Its nitrogen analog, the aza-Wittig rearrangement, transforms α-metalated tertiary amines into rearranged metal amides, producing homoallylic secondary amines. This … Read more
Sommelet-Hauser Rearrangement
Sommelet-Hauser rearrangement is one of the thermal [2,3]-sigmatropic rearrangements, in which the benzylic quaternary ammonium salts are treated within the presence of a strong base like NaNH2, KNH2, as well as alkyl lithium to prepare the Substituted 3° benzylic amine.
Aza-Claisen Rearrangement:
The Aza-Claisen rearrangement is a chemical reaction involving a nitrogen atom’s migration from one position to another within a molecule. It is named after the Claisen rearrangement, a well-known rearrangement reaction involving oxygen atoms. The mechanism of the aza-Claisen rearrangement: The mechanism of the aza-Claisen rearrangement involves three steps: Protonation: The reaction often starts with … Read more