radicals, generated in situ. A simple metal-free borylation of aryl iodides mediated by a fluoride sp2–sp3 diboron adduct is described. The reaction conditions are compatible with various functional groups. Electroniceffects of substituents do not affect the borylation while steric hindrance does. The reaction proceeds via a radical mechanism in which pyridine serves to stabilize the boryl radicals, generated
[EN] HETEROCYCLIC COMPOUNDS AND METHODS OF USE<br/>[FR] COMPOSÉS HÉTÉROCYCLIQUES ET PROCÉDÉS D'UTILISATION
申请人:INTEGRAL BIOSCIENCES PVT LTD
公开号:WO2020012357A1
公开(公告)日:2020-01-16
The present invention discloses compounds useful in treatment of conditions associated with excessive activity of transforming growth factor beta (TGF-β), particularly type 1 or activin-like kinase 5 (ALK 5). Specifically the present invention discloses compound of formula (I) which exhibit inhibitory activity against ALK 5. Method of treating conditions associated with excessive activity (ALK 5) with such compound is disclosed. Uses thereof, pharmaceutical composition, and kits are also disclosed.
Palladium-Catalyzed Methylation of Aryl, Heteroaryl, and Vinyl Boronate Esters
作者:Alexander M. Haydl、John F. Hartwig
DOI:10.1021/acs.orglett.9b00025
日期:2019.3.1
method for the direct methylation of aryl, heteroaryl, and vinyl boronate esters is reported, involving the reaction of iodomethane with aryl-, heteroaryl-, and vinylboronate esters catalyzed by palladium and PtBu2Me. This transformation occurs with a remarkably broad scope and is suitable for late-stage derivatization of biologically active compounds via the boronate esters. The unique capabilities
Investigation of a Lithium-Halogen Exchange Flow Process for the Preparation of Boronates by Using a Cryo-Flow Reactor
作者:James A. Newby、Lena Huck、D. Wayne Blaylock、Paul M. Witt、Steven V. Ley、Duncan L. Browne
DOI:10.1002/chem.201303736
日期:2014.1.3
Conducting low‐temperature organometallic reactions under continuous flow conditions offers the potential to more accurately control exotherms and thus provide more reproducible and scalable processes. Herein, progress towards this goal with regards to the lithium–halogenexchange/borylation reaction is reported. In addition to improving the scope of substrates available on a research scale, methods
Ligand-Enabled, Iridium-Catalyzed <i>ortho</i>-Borylation of Fluoroarenes
作者:Olena Kuleshova、Sobi Asako、Laurean Ilies
DOI:10.1021/acscatal.1c01206
日期:2021.5.21
borylation of a stoichiometric amount of a fluoroarene with high ortho-selectivity and tolerance of functional groups such as bromide, chloride, ester, ketone, amine, and in situ-borylated hydroxyl. Complex drug molecules such as haloperidol can be selectively borylated ortho to the F atom. The terpyridine ligand undergoes rollover cyclometalation to produce an N,N,C-coordinated iridium complex, which may