27044-91-3Relevant academic research and scientific papers
Enantioselective synthesis of enol lactones from tandem Michael addition/lactonization catalyzed by a chiral squaramide catalyst
Zhao, Bo-Liang,Du, Da-Ming
, p. 310 - 317 (2014/04/03)
The enantioselective tandem Michael addition reaction of dimedone and related 1,3-dicarbonyl compounds with α,β-unsaturated N-acylated succinimides catalyzed by a chiral squaramide catalyst has been investigated. This reaction provides a new approach for the synthesis of chiral enol lactones in good yields with moderate to high enantioselectivities (up to 88% ee) through the enantioselective Michael addition followed by lactonization and removal of the succinimide auxiliary.
N-heterocyclic carbene-catalyzed generation of α,β-unsaturated acyl imidazoliums: Synthesis of dihydropyranones by their reaction with enolates
Ryan, Sarah J.,Candish, Lisa,Lupton, David W.
supporting information; experimental part, p. 14176 - 14177 (2010/02/16)
(Chemical Equation Presented) Catalytic generation of α,β- unsaturated acyl imidazolium cations and enolates has been achieved, and their involvement in a Michael addition acylation sequence exploited, to provide a range of dihydropyranones. α,β-Unsaturat
SYNTHESIS OF ENOL ESTERS AND ENOL LACTONES VIA PALLADIUM-CATALYZED CARBONYLATION OF ARYL AND ALKENYL HALIDES
Shimoyama, Izumi,Zhang, Yantao,Wu, Guangzhong,Negishi, Ei-ichi
, p. 2841 - 2844 (2007/10/02)
Acylpalladium species derivable via oxidative addition of a Pd-phosphine complex with aryl and alkenyl iodides and CO insertion can react, either intramolecularly or intermolecularly, with enolates generated in situ to give the corresponding enol esters a
