Triarylbismuth Reagents Research Articles

ChemInform Abstract: Pd(0)‐Catalyzed Couplings Using Bromide and Chloride Derivatives of Baylis—Hillman Adducts with Triarylbismuths as Atom‐Efficient Multi‐Coupling Nucleophiles.

AbstractOptimized reaction conditions are presented for the Pd‐catalyzed coupling of halogenated Baylis—Hillman adducts, e.g. (II) or (VIII), with triarylbismuth reagents (I).

Palladium‐Catalyzed Synthesis of 4‐Arylcoumarins Using Triarylbismuth Compounds as Atom‐Efficient Multicoupling Organometallic Nucleophiles

AbstractTriarylbismuth compounds have been cross‐coupled as atom‐efficient multicoupling organometallic nucleophiles with 4‐bromo‐ and 4‐(trifluoromethylsulfonyloxy)coumarins under palladium catalysis conditions. These reactions afforded an array of 4‐arylcoumarins in high yields. The general palladium protocol has been demonstrated to be efficient for the coupling of both bromide and triflate derivatives of coumarins with triarylbismuth reagents.

443 Effect of clofibrate and alcohol treatment on ethanol metabolic enzymes and lipid peroxidation in the rat liver

A copper-catalyzed protocol for the chemoselective arylation of (1R,2R)-(−)-N-BOC-2-amino-1-(4-nitrophenyl)-1,3-propanediol using triarylbismuth reagents is reported. The reaction operates under simple and mild conditions, shows good functional group tolerance and allows the installation of ortho-, meta-, and para-substituted aryl groups in moderate to good yields. These arylated products are then transformed in two steps into their corresponding N-dichloroacetamide derivatives. This sequence provides an expedient access to 3-O-aryl chloramphenicol derivatives.

ChemInform Abstract: Synthesis of Hydrazines with Aromatic Substituents Using Triarylbismuth Reagents.

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Synthesis of Hydrazines with Aromatic Substituents Using Triarylbismuth Reagents

Smooth monoarylation of two triprotected hydrazine reagents under mild conditions has been accomplished using triaryl-bismuthanes in the presence of copper acetate and amine to give products 3 and 6 in excellent yield. Arylation on N-2 after selective dep