Ligand Control of Palladium‐Catalyzed Site‐Selective α‐ and γ‐Arylation of α,β‐Unsaturated Ketones with (Hetero)aryl Halides
作者:On Ying Yuen、Chau Ming So
DOI:10.1002/anie.202010682
日期:2020.12.21
describes the first palladium‐catalyzed, site‐selective α‐ and γ‐arylation of α,β‐unsaturated ketones with (hetero)arylhalides. A wide range of hetero(aryl)halides coupled with α,β‐unsaturated ketones, and transformation into the arylated products proceeded with excellent to good yields. The site selectivity of the reaction is switchable by simply changing the phosphine ligand to access either α‐arylated
Catalytic Asymmetric Epoxidation of 2-Cyclopentenones
作者:Anna Lee、Corinna M. Reisinger、Benjamin List
DOI:10.1002/adsc.201200072
日期:2012.6.18
The first highly efficient asymmetricepoxidation of 2‐cyclopentenones has been developed. Using a newly designed and readily available Cinchona amine catalyst, 2‐cyclopentenones are reacted with hydrogen peroxide to give the corresponding epoxycyclopentanones in high yields and excellent enantioselectivities.