Efficient Selenium-Catalyzed Selective C(sp<sup>3</sup>)−H Oxidation of Benzylpyridines with Molecular Oxygen
作者:Weiwei Jin、Poonnapa Zheng、Wing-Tak Wong、Ga-Lai Law
DOI:10.1002/adsc.201601065
日期:2017.5.2
An efficient selenium‐catalyzed direct oxidation of benzylpyridines in aqueous DMSO has been successfully developed by using molecularoxygen as the oxidant. A variety of benzoylpyridines with broad functional group tolerance were obtained in modest to excellent yields and with exclusive chemoselectivity.
Synthesis of Aryl(di)azinyl Ketones through Copper- and Iron-catalyzed Oxidation of the Methylene Group of Aryl(di)azinylmethanes
作者:Johan De Houwer、Kourosch Abbaspour Tehrani、Bert U. W. Maes
DOI:10.1002/anie.201108540
日期:2012.3.12
Sustainable Oxidations: An oxidation method to transform aryl(di)azinylmethanes into aryl(di)azinylketones is described. Base metals (copper and iron) as catalysts in combination with O2 as the oxidant are used, which makes this method sustainable. The utility of this method is illustrated by the synthesis of 6‐(4‐methylbenzoyl)pyridine‐2‐carbaldehyde, which is an intermediate in the preparation of
The present invention relates generally to novel compounds relating to the diagnosis and treatment of pathologies relating to the Hedgehog pathway, including but not limited to tumor formation, cancer, neoplasia, and non-malignant hyperproliferative disorders. The present invention includes novel compounds, novel compositions, methods of their use and methods of their manufacture, where such compounds are generally pharmacologically useful as agents in therapies whose mechanism of action involve methods of inhibiting tumorigenesis, tumor growth and tumor survival using agents that inhibit the Hedgehog and Smo signaling pathway.
Electron Transfer between Hydrogen-Bonded Pyridylphenols and a Photoexcited Rhenium(I) Complex
作者:William Herzog、Catherine Bronner、Susanne Löffler、Bice He、Daniel Kratzert、Dietmar Stalke、Andreas Hauser、Oliver S. Wenger
DOI:10.1002/cphc.201201069
日期:2013.4.15
Two pyridylphenols with intramolecular hydrogen bonds between the phenol and pyridine units have been synthesized, characterized crystallographically, and investigated by cyclic voltammetry and UV/Vis spectroscopy. Reductive quenching of the triplet metal‐to‐ligand charge‐transfer excited state of the [Re(CO)3(phen)(py)]+ complex (phen=1,10‐phenanthroline, py=pyridine) by the two pyridylphenols and
[EN] A VERSATILE LIGAND FOR PALLADIUM-CATALYZED META-C-H FUNCTIONALIZATIONS<br/>[FR] LIGAND POLYVALENT POUR DES FONCTIONNALISATIONS DE MÉTA-C-H CATALYSÉES PAR DU PALLADIUM
申请人:SCRIPPS RESEARCH INST
公开号:WO2017184589A1
公开(公告)日:2017-10-26
A class of mono-protected 3-amino-2- hydroxypyridine (MPAHP) ligands that enable the meta- C-H arylation of anilines, phenols, phenylacetic acids, and biologically relevant heterocyclic compounds using norbornene as a transient mediator is disclosed. The applicability of this meta-arylation methodology in the pharmaceutical industry is illustrated for heteroaryl substrates and heteroaryl iodide coupling partners, a feat made possible by using the MPAHP ligand. The enabling nature of MPAHP ligands to achieve other meta-C-H functionalization processes is also illustrated by the development of a meta-C-H amination reaction and a meta-C-H alkynylation reaction.