Organic Chemistey for JEE|NEET|GATE|NET
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.
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
The addition of aliphatic or aromatic aldehydes across activated double bonds in the presence of a nucleophilic catalyst for the synthesis of 1,4-diketones and γ-oxo nitriles is known as the Stetter reaction.
Suzuki cross -coupling reaction is an coupling reaction and also known as Suzuki-Miyaura cross-coupling, its coupling between a boronic acid and an organohalide or aromatic halides by using Palladium (0) complex is used to catalyst and base.
Definitionn: The Aldol reaction is a versatile carbon-carbon bond-forming reaction in organic chemistry. It involves the condensation of an enol or enolate (derived from a carbonyl compound) with another carbonyl compound, forming a β-hydroxy carbonyl compound, known as an aldol product. The reaction takes its name from the combination of “aldehyde” and “alcohol,” as the … Read more
The Alder Ene reaction, also known as the Alder-ene reaction or the ene reaction, is a type of pericyclic reaction in organic chemistry. It involves the addition of a π-bond (ene) to an unsaturated double bond (eneophile) in the presence of a Lewis acid or a transition metal catalyst. The reaction proceeds through a concerted … Read more