Efficient aromatic C–H bond activation using aluminosilicate-supported metal nanoparticles
作者:Reza Hosseinpour、Antonio Pineda、Angel Garcia、Antonio A. Romero、Rafael Luque
DOI:10.1016/j.catcom.2014.01.022
日期:2014.3
Novel nanomaterials based on mesoporous aluminosilicate-supported nanoparticles with high surface areas have been synthesized using a mechanochemical protocol and utilized in the hydroarylation of phenylacetylene to 1,1-diarylalkenes under microwave irradiation. Fe/Al-SBA-15 exhibited a higher activity and afforded high yields of substituted alkenes in short times of reaction.
Catalytic Availabilities of Lewis Acidic SnCl<sub>2</sub>: Ph<sub>3</sub>PAuCl-SnCl<sub>2</sub>Composite Catalyzed Successive<i>ortho</i>-Alkenylation/O-Alkenylation of Phenols Followed by Cyclization to 1-Benzopyrans
Ph3PAuCl and SnCl2, catalyzed the formation of 1-benzopyrans from phenols and phenylacetylene. The Ph3PAuCl–SnCl2 composite catalyzed reaction was presumed to proceed through the successive ortho-alkenylation and O-alkenylation of phenols with phenylacetylene followed by cyclization of the prepared ortho- and O-dialkenylated phenol derivatives. Conveniently, all reactions with Ph3PAuCl–SnCl2 composite