Palladium-Catalyzed C-C Ring Closure in α-Chloromethylimines: Synthesis of 1<i>H</i>
-Indoles
作者:Delia Bellezza、Bárbara Noverges、Francesco Fasano、Jeymy T. Sarmiento、Mercedes Medio-Simón、Gregorio Asensio
DOI:10.1002/ejoc.201801607
日期:2019.2.14
2‐aryl‐ and 2‐alkyl‐1H‐indoles. Readily or commercially available α‐chloromethyl‐aryl or ‐alkyl ketones are used as the precursors. Indoles containing substituents, including halogens, at the benzene ring are also easily accessible simply by use of the appropriate substituted aromatic amine.
Selectivity control in hydroarylation‐based C−H alkylation has been dominated by steric interactions. A conceptually distinct strategy that exploits the programmed switch in the C−H activation mechanism by means of cobalt catalysis is presented, which sets the stage for convenient C−H alkylations with unactivated alkenes. Detailed mechanistic studies provide compelling evidence for a programmable switch
[EN] 5-OXO-ETE RECEPTOR ANTAGONIST COMPOUNDS<br/>[FR] COMPOSÉS ANTAGONISTES DES RÉCEPTEURS 5-OXO-ETE
申请人:UNIV MCGILL
公开号:WO2010127452A1
公开(公告)日:2010-11-11
The present invention relates to novel pharmaceutically-useful compounds which are antagonists of the 5-oxo-ETE receptors, such as the OXE receptor. These compounds have use as therapeutic and/or prophylactic agents for diseases characterized by tissue eosinophilia, such as inflammatory conditions including respiratory diseases. The invention also relates to pharmaceutical compositions, to the use of such compounds and compositions as medicaments, and to therapeutic methods.
Nickel-catalyzed C–H alkylation of indoles with unactivated alkyl chlorides: evidence of a Ni(<scp>i</scp>)/Ni(<scp>iii</scp>) pathway
作者:Dilip K. Pandey、Shidheshwar B. Ankade、Abad Ali、C. P. Vinod、Benudhar Punji
DOI:10.1039/c9sc01446b
日期:——
described which demonstrates a high level of chemo and regioselectivity. The reaction tolerates numerous functionalities, such as halide, alkenyl, alkynyl, ether, thioether, furanyl, pyrrolyl, indolyl and carbazolyl groups including acyclic and cyclic alkyls under the reaction conditions. Mechanistic investigation highlights that the alkylation proceeds through a single-electron transfer (SET) process
ZnBr2-mediated synthesis of indoles in a ball mill by intramolecular hydroamination of 2-alkynylanilines
作者:Markus Zille、Achim Stolle、Andreas Wild、Ulrich S. Schubert
DOI:10.1039/c4ra00715h
日期:——
A method for the intermolecular hydroamination of 2-alkynylanilines in a planetary ball mill is described, which avoids the use of solvents during the reaction. Different additives were tested, whereby ZnBr2 in stoichiometric amounts showed the best performance in terms of yield and selectivity. Furthermore, the materials used for milling balls and beakers as well as the milling time and the rotation frequency were changed in order to achieve the best reaction conditions. As a result, two methods for the synthesis of 2-substituted 1H-indoles are described with their respective advantages and disadvantages. Both methods were used to convert different alkyl and aryl containing 2-ethynylanilines.