We have developed an efficient method for direct formation of epoxide groups from carbon(sp2)–carbon(sp3) single bonds of β-keto esters; the reaction is mediated by the water-soluble hypervalent iodine(V) reagent AIBX (5-trimethylammonio-1,3-dioxo-1,3-dihydro-1λ5-benzo[d][1,2]iodoxol-1-ol anion). On the basis of the results of density functional theory calculations and experimental studies, we propose
Enantioselective Synthesis of Atropisomeric Vinyl Arene Compounds by Palladium Catalysis: A Carbene Strategy
作者:Jia Feng、Bin Li、Yun He、Zhenhua Gu
DOI:10.1002/anie.201509571
日期:2016.2.5
An efficient palladium‐catalyzed asymmetric synthesis of axially chiral vinylarenes from aryl bromides and hydrazones is reported. The products were easily oxidized to axially chiral biaryl compounds, and the phosphine oxides were readily reduced to phosphine ligands.