SmCp<sup>R</sup><sub>2</sub>-mediated cross-coupling of allyl and propargyl ethers with ketoesters and a telescoped approach to complex cycloheptanols
作者:Mateusz P. Plesniak、Xavier Just-Baringo、Fabrizio Ortu、David P. Mills、David J. Procter
DOI:10.1039/c6cc07318b
日期:——
A highly regio- and diastereoselective cross-coupling of allyl/propargylethers and [small beta]-ketoesters, mediated by SmCpR2 reagents, delivers decorated [small delta]-lactones. Screening of the Cp ligands on Sm(II) was employed to achieve high...
Visible-Light-Mediated Generation of Nitrogen-Centered Radicals: Metal-Free Hydroimination and Iminohydroxylation Cyclization Reactions
作者:Jacob Davies、Samuel G. Booth、Stephanie Essafi、Robert A. W. Dryfe、Daniele Leonori
DOI:10.1002/anie.201507641
日期:2015.11.16
formation and use of iminyl radicals in novel and divergent hydroimination and iminohydroxylationcyclizationreactions has been accomplished through the design of a new class of reactive O‐aryl oximes. Owing to their low reduction potentials, the inexpensive organic dye eosin Y could be used as the photocatalyst of the organocatalytic hydroiminationreaction. Furthermore, reaction conditions for a unique