Arndt-Eistert Reaction
Arndt-Eistert Reaction
Name Reaction
Appel Reaction:
The Appel reaction is a common organic nucleophilic substitution reaction (SN2) employed to transform alcohol to a corresponding alkyl halide using the reagents tetrahalomethane (CX4) and triphenylphosphine (PPh4) with inversion of stereochemistry and high yield.
BIGINELLI REACTION:
The acid catalysed three-component one-pot synthesis of highly functionalized 3,4-dihydropyrimidin-2(1H)-ones (DHPMs) from biginelli reaction reactants heteroaromatic, aromatic and aliphatic aldehyde, urea, and ethyl acetoacetate.
Pauson-Khand Reaction
The Pauson-Khand reaction is an organic transformation used to convert an alkyne and alkene to a substituted cyclopentenone by using CO2(CO)8 complex catalyst and an of carbon monoxide. Also known as Pauson-Khand cycloaddition.
TAKAI-UTIMOTO OLEFINATION (TAKAI REACTION)
Takai reaction is a general carbon-carbon bond-forming reaction in organic chemistry. Takai reaction is also known as takai -Utimoto olefination, This transformation is referred to as the name of Kazuhiko Takai. This olefination is a simple alternative for the Wittig reaction and other complex methods like preparing an E alkene stereoselective (major) isomer. In this method, chromium(II) catalyst was used to prepare (E) configuration of alkenyl halides from corresponding carbonyl compounds like aldehyde and ketones.
Yamaguchi Esterification:
The development of high number ring lactones from hydroxy acids employing Yamaguchi reagent (2,4,6-trichlorobenzoyl chloride/DMAP) is known as the Yamaguchi macrolactonization