Organic letters

Synthesis of Unsymmetrically Substituted Bipyridines by Palladium-Catalyzed Direct C− H Arylation of Pyridine N-Oxides

S Duric, CC Tzschucke

Index: Organic Letters, , vol. 13, # 9 p. 2310 - 2313

Full Text: HTML

Citation Number: 67

Abstract

... Volume: Page: ... Organic Letters. ... excess of N-oxide 1a improved the yield of 3a to 72%, whereas a 2.5-fold excess of bromide 2a gave terpyridine N-oxide 4a in 20% yield, which could be increased to 34% yield by raising the catalyst loading.(13) Since employing ...