Synthesis of hindered alkyl aryl ether derivatives (R–O–Ar) remains a huge challenge and highly desirable in organic and medicinal chemistry because extensive substitution on the ether bond prevents the undesired metabolic process and thus avoids rapid degradation in vivo. Herein, we report an unprecedented hindered alkoxylation of picolinamide attached aromatic amines using economic copper salt and
Chelation-promoted Efficient C−H/N−H Cross Dehydrogenative Coupling between Picolinamides and Simple Ethers under Copper Catalysis
作者:Qiang Yue、Zhen Xiao、Zhengkun Kuang、Zhengding Su、Qian Zhang、Dong Li
DOI:10.1002/adsc.201701508
日期:2018.3.20
A highly efficient copper‐catalyzed C−H/N−H cross dehydrogenative coupling between picolinamides and simple ethers was developed. The reaction was promoted by the chelation assistance of removable picolinyl group and exhibited excellent TON and TOF number. This method was applicable to both N‐aryl and alkyl picolinamides as well as various cyclic and acyclic ethers with good functional group compatibility
[EN] NEGATIVE ALLOSTERIC MODULATORS OF METABOTROPIC GLUTAMATE RECEPTOR 2<br/>[FR] MODULATEURS ALLOSTÉRIQUES NÉGATIFS DU RÉCEPTEUR MÉTABOTROPIQUE DU GLUTAMATE DE TYPE 2
申请人:UNIV VANDERBILT
公开号:WO2016149324A1
公开(公告)日:2016-09-22
Described are negative allosteric modulators of metabotropic glutamate receptor 2 (mGlu2), pharmaceutical compositions including the compounds, and methods of using the compounds and compositions for treating depression, anxiety, obsessive-compulsive disorder, cognitive disorders, Alzheimer's disease, or autism spectrum disorders in a subject.
Rh-Catalyzed Annulative Insertion of Terminal Olefin onto Pyridines via a C–H Activation Strategy Using Ethenesulfonyl Fluoride as Ethylene Provider
作者:Chen Li、Hua-Li Qin
DOI:10.1021/acs.orglett.9b01364
日期:2019.6.21
A Rh(III)-catalyzed annulative insertion of ethylene onto picolinamides was achieved, providing a portal to a class of unique pyridine-containing molecules bearing a terminal olefin moiety for diversification. Application of this method for modification of Sorafenib was also accomplished.
N-picolinamides as ligands for Ullmann-type homocoupling reactions
作者:Fehmi Damkaci、Esra Altay、Matthew Waldron、Michael A. Knopp、David Snow、Nicholas Massaro
DOI:10.1016/j.tetlet.2013.11.111
日期:2014.1
The use of N-phenylpicolinamide (NPPA) as a ligand in Ullmann-type homocoupling reactions of aryl iodides and bromides in common solvents, such as DMF and MeCN has been successfully demonstrated at room temperature. In addition, this work provided the first example of the homocoupling of an aryl chloride at 82 °C, which is a relatively low temperature when compared to regular Ullmann reaction temperatures