Catalytic Asymmetric Bromine-Lithium Exchange: A New Tool to Build Axial Chirality

A New Approach to Axially Chiral Bipyrid

A New Approach to Axially Chiral Bipyridine N,N′-Dioxides Bearing Aromatic Substituents and their Use for Catalytic Asymmetric Allylation of Aldehydes with Allyl(trichloro)silane

✍ Asato Kina; Toyoshi Shimada; Tamio Hayashi 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 159 KB 👁 2 views

## Abstract Palladium‐catalyzed cross‐coupling of bipyridine __N,N′__‐dioxide 6,6′‐dichloride (__R__~__nap__~__,R__~__pyr__~)‐**1** with the aryl Grignard reagents opened a new approach to axially chiral bipyridine __N,N′‐__dioxides (__R__)‐**2** bearing a variety of aryl groups at the 6 and 6′ pos