Silver‐Catalysed Hydroarylation of Highly Substituted Styrenes
作者:Toryn Dalton、Steffen Greßies、Mowpriya Das、Maximilian Niehues、Malte L. Schrader、Christian Gutheil、Bart Jan Ravoo、Frank Glorius
DOI:10.1002/anie.202016268
日期:2021.4.6
Hydroarylation is an effective strategy to rapidly increase the complexity of organic structures by transforming flat alkene moieties into three‐dimensional frameworks. Many strategies have already been developed to achieve the hydroarylation of styrenes, however most of these reports examine the hydroarylation of unpolar, β‐mono‐ or β‐unsubstituted styrenes, while exploring mainly electron‐rich benzene
Sulfoxides in Julia−Lythgoe Olefination: Efficient and Stereoselective Preparation of Di-, Tri-, and Tetrasubstituted Olefins
作者:Jirí Pospíšil、Tomáš Pospíšil、István E. Markó
DOI:10.1021/ol050649e
日期:2005.6.1
A novel modification of the classical Julia-Lythgoe olefination, using sulfoxides instead of sulfones, affords, after in situ benzoylation and SMl(2)/HMPA- or DMPU-mediated reductive elimination, 1,2-di-, tri-, and tetrasubstituted olefins in moderate to excellent yields and E/Z selectivity. The conditions are mild, and the procedure is broadly applicable.