« Enantioselective Michael Addition: An Experimental Introduction to Asymmetric Synthesis » : published in the Journal of Chemical Education
Abstract :
We adapted a classical asymmetric Michael addition for a 1-day experimental session (6-8 hrs) for third or fourth-year undergraduate students. The experiment follows up three steps : synthesis of a chiral Lewis Acid, LiAl((S)-BINOL)2, then its use as a catalyst in the Michael addition of diethyl malonate on cyclopentenone, followed by purification through column chromatography on silica gel. The desired product can be fully characterized by 1D and 2D NMR experiments and IR spectroscopy. The enantiomeric excess can be determined by polarimetry and 1H NMR using chiral lanthanide shift reagent Eu(hfc)3.
« Enantioselective Michael Addition: An Experimental Introduction to Asymmetric Synthesis », Martin Tiano J. Chem. Educ. 2020, 97(8), 2291–2295. DOI: 10.1021/acs.jchemed.0c00164
Also available on ChemRxiv https://dx.doi.org/10.26434/chemrxiv.11336525
« New High-Performance Porous Ionic Liquids for Low Pressure CO2 Capture » : Now published in Angewandte Chemie Int. ed. !
« Predicting the modulation of UV–vis absorption and emission of mono-substituted pyrido[2,3,4-kl]acridines by electronic density variations analysis » published in Computational and Theoretical Chemistry
« Water Depollution Control: A Gateway to Reaction Monitoring and Analytical Chemistry » published in the Journal of Chemical Education
About The Author
