<i>Ex situ</i> generation of stoichiometric HCN and its application in the Pd-catalysed cyanation of aryl bromides: evidence for a transmetallation step between two oxidative addition Pd-complexes
作者:Steffan K. Kristensen、Espen Z. Eikeland、Esben Taarning、Anders T. Lindhardt、Troels Skrydstrup
DOI:10.1039/c7sc03912c
日期:——
methodology was also suitable for the synthesis of 13C-labelled benzonitriles with ex situ generated 13C-hydrogen cyanide. Stoichiometric studies with the metal complexes were undertaken to delineate the mechanism for this catalytictransformation. Treatment of Pd(P(tBu)3)2 with H13CN in THF provided two Pd-hydride complexes, (P(tBu)3)2Pd(H)(13CN), and [(P(tBu)3)Pd(H)]2Pd(13CN)4, both of which were isolated
[EN] HEPATITIS C VIRUS INHIBITORS<br/>[FR] INHIBITEURS DU VIRUS DE L'HÉPATITE C
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2011060000A1
公开(公告)日:2011-05-19
This disclosure concerns novel compounds of Formula (I) or as defined in the specification and compositions comprising such novel compounds. These compounds are useful antiviral agents, especially in inhibiting the function of the NS5A protein encoded by Hepatitis C virus (HCV). Thus, the disclosure also concerns a method of treating HCV related diseases or conditions by use of these novel compounds or a composition comprising such novel compounds.
Studies on the Electronic Absorption Spectra of 2,2′-Bithienyl and Some of Its Derivatives. A Molecular Orbital Treatment
作者:Rafie H. Abu-Eittah、Fakhreia A. Al-Sugeir
DOI:10.1246/bcsj.58.2126
日期:1985.7
The electronic absorptionspectra of 2,2′-bithienyl and a number of itsderivatives have been investigated. The predominant conformer as well as the polarity of the molecule were predicted from the spectrum. Molecular orbital calculations were performed on different conformers of 5-formyl-2,2′-bithienyl and the s-trans geometry proved to be the predominant conformer of the molecule. A good agreement
Palladium‐Catalysed Direct C‐H Activation/Arylation of Heteroaromatics: An Environmentally Attractive Access to Bi‐ or Polydentate Ligands
作者:Fazia Derridj、Aditya L. Gottumukkala、Safia Djebbar、Henri Doucet
DOI:10.1002/ejic.200800143
日期:2008.6
Bi- or polydentateligands based on heterocycles can be easily prepared by palladium-catalysed C–H bond activation of heteroaromatics followed by heteroarylation with heteroaryl bromides. A variety of heteroaromatics such as furans, thiophenes, pyridines, thiazoles or oxazole derivatives have been employed and moderate to good yields were generally obtained using the air-stable complex [PdCl(dppb)(C3H5)]
Halo-Bridged Abnormal NHC Palladium(II) Dimer for Catalytic Dehydrogenative Cross-Coupling Reactions of Heteroarenes
作者:Sreejyothi P、Samaresh Chandra Sau、Pavan K. Vardhanapu、Swadhin K. Mandal
DOI:10.1021/acs.joc.8b01053
日期:2018.8.17
This work describes the dehydrogenative coupling of heteroarenes using a dimeric halo-bridged palladium(II) catalyst bearing an abnormal NHC (aNHC) backbone. The catalyst can successfully activate the C–Hbond of a wide range of heteroarenes, which include benzothiazole, benzoxazole, thiophene, furan, and N-methylbenzimidazole. Further, it exhibited good activity for heteroarenes bearing various functional