Abstract: Systematic studies on the substituent effect in para substituted Fe(CO)4–pyridine complexes have been studied on the basis of DFT quantum-chemical calculations. The following substituents were taken into consideration: NO2, CN, CHO, F, H, CH3, and OH. Additionally, the Fe–N and Fe–C bonds were characterized on the basis of Atoms in Molecules topological analysis of electron density. I...

First, Schiff base iminopyridine ligands has been prepared by the condensation between primaryamines, different substituted anilines and active carbonyl group of pyridine carboxaldehyde, thenthe complexes [diiodo (3-ethylphenyl) pyridine-2-yl methylene amine] mercury(II), complex a,[dibromo (2,5-dimethylphenyl) pyridine-2-yl methylene amine] mercury(II) complex b, and[dinitrato bis-(2,6-dimethy...

A series of 3,5-(substituted)oxycarbonyl-1,4-dihydro-2,6-dimethyl-4-(substituted)pyridines (1a-j) were synthesized by Hantzsch method for pyridine synthesis. Treatment with chloroacetyl chloride produced N-(2-chloroacetyl)-3,5-(substituted)oxycarbonyl-1,4-dihydro-2,6-dimethyl-4-(substituted)pyridines (2a-e), which on further treatment with sulfanilamide resulted in 3,5-(substituted)oxycarbonyl-...

An organic ionic crystal, 1-methyl-3-acetyl-imidazolium iodide (MA-II), was synthesized and applied into all-solid-state dye-sensitized solar cells as electrolyte material. We adopted 1-methyl-3-propylimidazolium tetra-fluoroborate as a crystal growth inhibitor, lithium bis-trifluoromethanesulfonylimide as a charge transport enhancer, and 4-tert-butyl pyridine as a carrier recombination inhibit...

nicotine-based ionic liquid has been used as a green catalyst for pyridine-catalyzed huisgen reaction. it promoted addition of dimethylacetylenedicarboxylate to aldehydes or n-tosyl imines leading to efficient synthesis of 2-benzoylfumarates and 1-azadienes respectively under pyridine free odorless ionic liquid conditions. the improved results were obtained in terms of enhanced yields, with min...

A polarographic approach was developed for studying the biochemical physiology and biotechnological utility of the proteolytic anaerobe Clostridium sporogenes. Methyl viologen-mediated reductions were assessed in both analytical and preparative modes, using a dropping mercury electrode and a mercury pool electrode, respectively. Using these assays, we observed an active MV-linked NAD(P) reducta...

introduction: due to the anti-proliferative properties of platinum group-thiosemicarbazone complexes, the production of 191os-labeled 2-acetyl pyridine 4-n-methylthiosemicarbazone (191os-apmts) was investigated. methods: [191osmium (t½= 15.4d) was produced via the 190os(n,γ)191os nuclear reaction using enriched target irradiated with thermal neutrons. reaction of in-house synthesized 2-acetylpy...

A new series of pyrazolylpyridines was prepared by reaction of ethyl-3-acetyl-1,5-diphenyl1H-pyrazole-4-carboxylate with the appropriate aldehyde, malononitrile, or ethyl acetoacetate and an excess of ammonium acetate under reflux in acetic acid. Similarly, two novel bipyridine derivatives were prepared by the above reaction using terephthaldehyde in lieu of benzaldehyde derivatives. In additio...

9-epi-Leucomycin A5 has been obtained from leucomycin A5 (I) by the following reaction sequence. Leucomycin A5 (I) was treated with Collins reagent (CrO3-pyridine) in the presence of water (13%) to provide 9-dehydroleucomycin A5 (II) in 95% yield. The formyl group was internally protected by the reaction of II with acetic anhydride-K2CO3 to afford 18,2'-di-O-acetyl-9-dehydroleucomycin A5-3,18-h...