Bidentate Ruthenium Vinylcarbene Catalysts Derived from Enyne Metathesis
作者:Alois Fürstner、Paul W. Davies、Christian W. Lehmann
DOI:10.1021/om050310w
日期:2005.8.1
ruthenium complexes derived from the standard metathesis catalysts 1, 2, or 4 by enyne metathesis with phenylacetylene derivatives bearing an isopropoxy substituent at their ortho position are described. Terminal as well as non-terminal phenylacetylene derivatives react with similar ease, thus providing ample opportunity for the preparation of catalysts with tailor-made properties. Use of the silyl propargyl
A TBADT photocatalyst-enabled radical-induced cyclization pathway to access functionalized dihydrobenzofurans
作者:Punith S Gowda、Duddu S. Sharada、Gedu Satyanarayana
DOI:10.1039/d3cc02340k
日期:——
Herein, this work describes a photoinduced visible light-mediated radical cyclization for constructing dihydrobenzofuran (DHB) scaffolds. Notably, this cascade photochemical process is tolerable with various aromatic aldehydes and diverse alkynylarylethers and proceeds via an intramolecular 1,5-hydrogen atom transfer (HAT) pathway. Significantly, acyl C–H activation under mild conditions has been