Palladium Catalyzed Hydrodefluorination of Fluoro-(hetero)arenes
作者:Joseph J. Gair、Ronald L. Grey、Simon Giroux、Michael A. Brodney
DOI:10.1021/acs.orglett.9b00889
日期:2019.4.5
of fluorine incorporation around metabolic hotspots, the corresponding deuterodefluorination reaction may prove useful for converting fluorinated libraries to deuterated analogues to suppress the oxidative metabolism by kineticisotopeeffects.
Deoxygenative Amination of Azine-<i>N</i>-oxides with Acyl Azides via [3 + 2] Cycloaddition
作者:Dongeun Kim、Prithwish Ghosh、Na Yeon Kwon、Sang Hoon Han、Sangil Han、Neeraj Kumar Mishra、Saegun Kim、In Su Kim
DOI:10.1021/acs.joc.9b03173
日期:2020.2.21
an isocyanate from the starting acyl azide via a Curtius rearrangement can trigger a [3 + 2] dipolar cycloaddition of polar N-oxide fragments to generate the aminated azine derivative. The applicability of this method is highlighted by the late-stage and sequential amination reactions of complex bioactive compounds, including quinidine and fasudil. Moreover, the direct transformation of aminated azines
Copper oxidecatalysts have been prepared by pyrolysis of copper acetate on aluminum oxide. The material resulting from pyrolysis at 800 °C allows for catalytic hydrogenations at low temperature of a variety of unsaturated compounds such as quinolines, alkynes, ketones, imines, and polycyclic aromatic hydrocarbons as well as nitroarenes with good activity and selectivity.
A General and Highly Selective Cobalt-Catalyzed Hydrogenation of N-Heteroarenes under Mild Reaction Conditions
作者:Rosa Adam、Jose R. Cabrero-Antonino、Anke Spannenberg、Kathrin Junge、Ralf Jackstell、Matthias Beller
DOI:10.1002/anie.201612290
日期:2017.3.13
Herein, a general and efficientmethod for the homogeneous cobalt‐catalyzed hydrogenation of N‐heterocycles, under mild reaction conditions, is reported. Key to success is the use of the tetradentate ligand tris(2‐(diphenylphosphino)phenyl)phosphine). This non‐noble metal catalyst system allows the selectivehydrogenation of heteroarenes in the presence of a broad range of other sensitive reducible
[EN] PIPERIDINE-DIONE DERIVATIVES<br/>[FR] DÉRIVÉS DE PIPÉRIDINE-DIONE
申请人:HOFFMANN LA ROCHE
公开号:WO2015140133A1
公开(公告)日:2015-09-24
The invention provides novel compounds having the general formula (I) and tautomers and pharmaceutically acceptable salts thereof, wherein A1, A2, A3, A4, R1, R4, R5, R6, R7 and R8 are as defined herein, compositions including the compounds and methods of using the compounds.