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...

The effect of copper and its compounds on halogenation dehalogenation aromatic will be discussed in the proposed article. Cu oxidized to appropriate halides is an effective catalyst not only for synthesis halogenated benzenes or their derivatives as desired organic fine chemicals, but also undesirable formation thermodynamically stable very toxic polychlorinated polybrominated such biphenyls, d...

The large mnltinucleate cells of Ni~l la (about four inches in length) afford good opportunities for the study of permeability, and have therefore been used in the experiments described in this paper. The cell consists of a cell wall of cellulose, inside which is a thin layer of protoplasm surrounding a large central vacuole filled with sap which has a streaming movement. Analysis 1 of the sap ...

Selective functionalization reactions of aromatic and heteroaromatic halides with carbon, oxygen, and nitrogen nucleophiles have attracted much attention in the last decades. In addition to typical metal-catalyzed coupling reactions, direct functionalization of aryl halides through the formation of Grignard reagents offer new ways for the efficient construction of biologically interesting carbo...

The large mnltinucleate cells of Ni~l la (about four inches in length) afford good opportunities for the study of permeability, and have therefore been used in the experiments described in this paper. The cell consists of a cell wall of cellulose, inside which is a thin layer of protoplasm surrounding a large central vacuole filled with sap which has a streaming movement. Analysis 1 of the sap ...

BACKGROUND AND AIMS The colons of patients with pneumatosis cystoides coli produce excessive H2. Exposure to alkyl halides could explain this. Six consecutive patients who had pneumatosis cystoides coli while taking chloral hydrate (1-5+ g/day) are reported. Patients 2 and 3 were investigated after they had ceased chloral hydrate treatment. One produced methane, the other did not. (Pneumatosis ...

A tetracationic imidazolium-based catenane is reported which selective for bromide over other halides in aqueous media.

Carbon monoxide (CO) is in principle an excellent resource from which to produce industrial hydrocarbon feedstocks as alternatives to crude oil; however, CO has proven remarkably resistant to selective homologation, and the few complexes that can effect this transformation cannot be recycled because liberation of the homologated product destroys the complexes or they are substitutionally inert....

Alkyl bromides bearing various functional groups are smoothly converted to functionalized alkylzinc reagents by the direct insertion of magnesium in the presence of LiCl and ZnCl(2).