The palladium and copper contrast: a twist to products of different chemotypes and altered mechanistic pathways
作者:Kapileswar Seth、Sudipta Raha Roy、Asim Kumar、Asit K. Chakraborti
DOI:10.1039/c6cy00415f
日期:——
Unprecedented Pd–Ag/Cu–Ag nanocluster-catalyst switch leads to a phenazine/azoarene twist for non-radical mode C–H activation vs. radical mode N–N self-coupling of anilines.
The transformation of nitrobenzenes into azobenzenes by pyridine-derived super electron donor 2 is described. This method provides an efficient synthesis of azobenzenes because of not requiring the use of expensive transition-metals, toxic or flammable reagents, or harsh conditions. Moreover, when using 2-fluoronitrobenzenes as substrates, phenazines were found to be obtained. The process affords a
A rhodium-catalyzed annulative reaction between azobenzenes and nitrosoarenes has been developed, leading to a series of phenazines in moderate to good yields. This procedure proceeds with sequential chelation-assisted addition of aryl C–H to nitrosoarenes and ring closure by electrophilic attack of azo group to aryl. During this transformation, the azo group served as not only a traceless directing
[EN] FUSED TRICYCLIC ARYL COMPOUNDS USEFUL FOR THE TREATMENT OF VIRAL DISEASES<br/>[FR] COMPOSÉS ARYLES TRICYCLIQUES CONDENSÉS UTILES POUR LE TRAITEMENT DE MALADIES VIRALES
申请人:SCHERING CORP
公开号:WO2010132538A1
公开(公告)日:2010-11-18
The present invention relates to novel Fused Tricyclic Aryl Compounds, compositions comprising at least one Fused Tricyclic Aryl Compound, and methods of using the Fused Tricyclic Aryl Compounds for treating or preventing HCV infection in a patient.
The boron trifluoride-promoted reaction of a series of 3'- and 4'-substitutedbenzenesulphenanilides (1) with various alkenes has been investigated as a potential synthetic route to arylaminosulphides. The benzenesulphenanilides (1) investigated generally afford arylamino-sulphenylation adducts in fair to good yields except for the methoxy-substituted anilides (le and f), which largely lead to decomposition