A highly efficient copper-catalyzed system using commercially available racemic 1,1′-binaphthyl-2,2′-diol (rac-BINOL) as the ligand was eveloped for amination of aryl halides and heteroaryl halides with alkyl amines and N H heterocycles. Good to high yields were obtained for aryl romides and heteroaryl chlorides. The commercially available rac-BINOL ligand with excellent stability and high effi...

Important aspects of the electrochemical reduction of aryl thiocyanates were investigated. A striking change in the reductive cleavage mechanism as a function of the substituent on the aryl ring of the aryl thiocyanate is observed. A similar behavior has been reported for benzyl halides. This is different from what is widely reported for aryl halides where a stepwise mechanism is taking place r...

The strong inhibitor effect of aryl iodides on the quasi-homogenous gold-catalyzed oxidation reaction was described. Aryl iodides were adsorbed on the exposed surface of Au clusters, which affected the accessibility of the nanoclusters to the reacting species and acted as strong inhibitors in catalysis.

A palladium(II)-catalyzed ortho-benzoxylation of 2-arylpyridines with aryl acylperoxides was developed. With pyridyl as directing group, the benzoxylation reaction exhibits remarkable regioselectivity and excellent functional group tolerance, providing the products in up to 87% yield.

some n¬-acyl-n'-aryl thiourea derivatives 4(a-f) have been prepared by the reaction of acyl halides ammonium thiocyanate and aryl amines. the structures of synthesized compounds have been characterized by ir, 1hnmr spectral studies. the synthesized compounds 5(a-f) have been screened for antibacterial activity. the effect of the structure of the investigated compounds on the antibacterial activ...

Continuing in our researches on the syntheses, reactivity, pharmacological/biological activities of heterocyclic compounds containing one or more nitrogen atoms we have examined some chemico-physical properties (1H and 13C NMR, electrochemical behavior, ESR) three series 2-aryl-5(or 6)-nitrobenzimidazoles (1–3) variously substituted 2-aryl ring. The behavior nitro group benzimidazole ring has b...

Chapter 1. Suzuki-Miyaura coupling reactions of aryl and heteroaryl halides with aryl-, heteroaryl and vinyl boronic acids proceed in very good to excellent yield with the use of 2-(2',6'-dimethoxybiphenyl)dicyclohexylphosphine, SPhos. Additionally, a comparison of the reactions with SPhos and with 2(2',4',6'-triisoprocpylbiphenyl)-diphenylphosphine is presented that is informative in determini...

An enantioselective α-amination of aryl oxindoles catalyzed by a dimeric quinidine has been developed. The reaction is general, broad in substrate scope, and affords the desired products in good yields with good to excellent enantioselectivities. This study provides the first examples of a general organocatalytic method for the creation of nitrogen-containing, tetrasubstituted chiral centers at...

The electronic properties of polyhedral oligomeric silsesquioxanes (POSS) have recently been subjected to study. Although theoretical calculations have predicted that POSS can work as an acceptor for π-conjugated organic units, an effective reaction to incorporate aryl groups into a POSS backbone remains to be established. In this work, Rh-catalyzed direct arylation has been developed. Heptaiso...

N(1)-Arylsulfonyl-substituted analogs of N,N-dimethyltryptamine bind at 5-HT(6) receptors. Replacement of the aryl moiety with similarly hydrophobic alkyl substituents results in decreased affinity, as does replacement of a benzenesulfonyl moiety with a benzyl group. Current findings indicate that an aryl (or substituted aryl) sulfonyl (rather than alkylsulfonyl or benzyl) moiety is optimal for...