Experimental and Theoretical Studies on Ru(II)-Catalyzed Oxidative C–H/C–H Coupling of Phenols with Aromatic Amides Using Air as Oxidant: Scope, Synthetic Applications, and Mechanistic Insights
作者:Luoqiang Zhang、Lei Zhu、Yuming Zhang、Yudong Yang、Yimin Wu、Weixin Ma、Yu Lan、Jingsong You
DOI:10.1021/acscatal.8b02816
日期:2018.9.7
synthesis of Palomid 529, a drug in development for the treatment of glioblastoma and neovascular age-related macular degeneration. With a combination of experimental and theoretical methods, we get more insight into the essential issues of strategy determining the reaction process. The stronger coordinating ability of 2-aryloxypyridine and the less steric hindrance of amide are pivotal to the high chemoselectivity
Generation of Stoichiometric Ethylene and Isotopic Derivatives and Application in Transition‐Metal‐Catalyzed Vinylation and Enyne Metathesis
作者:Geanna K. Min、Klaus Bjerglund、Søren Kramer、Thomas M. Gøgsig、Anders T. Lindhardt、Troels Skrydstrup
DOI:10.1002/chem.201303668
日期:2013.12.16
Ethylene is one of the most important buildingblocks in industry for the production of polymers and commodity chemicals. 13C‐ and D‐isotope‐labeled ethylenes are also valuable reagents with applications ranging from polymer‐structure determination, reaction‐mechanism elucidation to the preparation of more complex isotopically labeled compounds. However, these isotopic derivatives are expensive, and
Carbonylative Heck Reactions Using CO Generated <i>ex Situ</i> in a Two-Chamber System
作者:Philippe Hermange、Thomas M. Gøgsig、Anders T. Lindhardt、Rolf H. Taaning、Troels Skrydstrup
DOI:10.1021/ol200686h
日期:2011.5.6
A carbonylative Heck reaction of aryl iodides and styrene derivatives employing a two-chamber system using a stable, crystalline, and nontransition metal based carbon monoxide source is reported. By applying near-stoichiometric amounts of the carbon monoxide precursor, an effective exploitation of the hazardous CO gas is obtained affording chalcone derivatives in good yields. Application to isotope labeling, incorporating (13)CO, was further established.
Synthesis of Amides via Palladium-Catalyzed Amidation of Aryl Halides
A new and efficient method for the synthesis of amides via palladium-catalyzed C−C coupling of arylhalides with isocyanides is reported, by which a series of amides were formed from readily available starting materials under mild conditions. This transformation could extend its use to the synthesis of natural products and significant pharmaceuticals.