Scope of the Suzuki−Miyaura Cross-Coupling Reactions of Potassium Heteroaryltrifluoroborates
作者:Gary A. Molander、Belgin Canturk、Lauren E. Kennedy
DOI:10.1021/jo802590b
日期:2009.2.6
A wide variety of bench-stable potassium heteroaryltrifluoroborates were prepared, and general reaction conditions were developed for their cross-coupling to aryl and heteroaryl halides. The cross-coupled products were obtained in good to excellent yields. This method represents an efficient and facile installation of heterocyclic building blocks onto preexisting organic substructures.
An Efficient Low-Temperature Stille-Migita Cross-Coupling Reaction for Heteroaromatic Compounds by Pd-PEPPSI-IPent
作者:Meenakshi Dowlut、Debasis Mallik、Michael G. Organ
DOI:10.1002/chem.200903337
日期:2010.4.12
The reactivity of Pd–PEPPSI (Pyridine, Enhanced, Precatalyst, Preparation, Stabilization, and Initiation) precatalysts in the Stille–Migita cross‐coupling reaction between heteroaryl stannanes and aryl or heteroaryl halides was evaluated. In general, Pd–PEPPSI–IPent (IPent=diisopentylphenylimidazolium derivative) demonstrated high efficiency over a variety of challenging aryl or heteroaryl halides