Nanocrystalline Titania-Supported Palladium(0) Nanoparticles for Suzuki-Miyaura Cross-Coupling of Aryl and Heteroaryl Halides
作者:B. Sreedhar、Divya Yada、P. Surendra Reddy
DOI:10.1002/adsc.201100012
日期:2011.10
The Suzuki cross-coupling reaction of various aryl and heteroarylhalides with arylboronic and heteroarylboronic acids was studied using a titania-supportedpalladium(0) catalyst at room temperature under air. The conversion and selectivity results obtained for many substrates were excellent and similar to those provided by more active or even homogeneous catalysts. The methodology is similarly effective
A convenient photochemical flow protocol for the formation of aryl‐carbon bonds via photogenerated phenyl cations has been developed. A wide range of phenylated products, including biaryls, allylarenes, 2‐arylacetals and benzyl γ‐lactones, was smoothly synthesized in satisfactory yields under metal‐free conditions. The adoption of a flow reactor often allowed us to adopt higher concentrations of substrates