Reactivite du derive lithie issu du dioxolanne du levulate de trimethylsilyle vis-a-vis des derives carbonyles: Une methode directe d'olefination des aldehydes aromatiques et des cetones
作者:Jean-Louis Moreau、René Couffignal
DOI:10.1016/0022-328x(85)80391-0
日期:1985.12
At −60°C and in ether, the organolitium reagent produced by trimethylsilyl 4,4-ethylenedioxypentanoate reacts with aldehydes and ketones, and gives the expected β-hydroxyacids. The β-ethylenic ketones are isolated when the condensation is carried out with aromaticaldehydes and ketones. This proves to be an efficient route for carbonyl olefination.
Metal‐Free Photochemical Olefin Isomerization of Unsaturated Ketones via 1,5‐Hydrogen Atom Transfer
作者:Rajendran Manikandan、Ravindra S. Phatake、N. Gabriel Lemcoff
DOI:10.1002/chem.202200634
日期:2022.5.19
Bring on the Light: An efficient photochemical metal/catalyst-free system has been uncovered for the selective one-bond olefin migration of unsaturated ketones. Diverse substrate scope, functional group tolerance and its application for dehomologation and one-carbon selective olefin migration processes in linear alkenes highlights the usefulness of this method.