Pyridine, a suspected genotoxic and formaldehyde, a potent carcinogen, are present in several industrial wastewater including commercial solvent, resin and pesticide manufacturing industries. The extent of pyridine and formaldehyde toxicity in aquatic organisms is unknown. Therefore, in present study the toxicity of pyridine and formaldehyde were investigated in artificial aquatic ecosystem (mi...

The Front Cover shows 5-bromo-2-(tetrahydro-2H-pyran-4-yl)pyridine – one of many sp3-enriched pyridine derivatives prepared on a multigram scale by group Ukrainian chemists. background photo Anatolii Varenyk depicts the Kilometre Zero Ukraine Sign (also known as “The Winged Globe”) control point located Independence Square (Maidan Nezalezhnosti) in Kyїv. More information can be found Research A...

Photodissociation of pyridine, 2,6-d2-pyridine, and d5-pyridine at 193 and 248 nm was investigated separately using multimass ion imaging techniques. Six dissociation channels were observed at 193 nm, including C5NH5 --> C5NH4 + H (10%) and five ring opening dissociation channels, C5NH5 --> C4H4 + HCN, C5NH5 --> C3H3 + C2NH2, C5NH5 --> C2H4 +C3NH, C5NH5 --> C4NH2 + CH3 (14%), and C5NH5 --> C2H2...

Two independent mol-ecules comprise the asymmetric unit of the title compound, C(12)H(11)N(3)O(2). These differ in terms of the relative orientations of the benzene rings as seen in the respective dihedral angles formed between the pyridine and benzene rings [17.42 (16) and 34.64 (16)°]. Both mol-ecules are twisted about the amine-tolyl N-C bonds [respective torsion angles = 22.3 (5) and 35.9 (...

Syntheses of 2,6-di(5-aminopyrazol-3-yl)pyridine (L(1)), 2,6-di(5-tertbutylcarboxamidopyrazol-3-yl)pyridine (L(2)), 2,6-di(5-tertbutylpyrazol-3-yl)pyridine (L(3)), 2-(5-tertbutylpyrazol-3-yl)-6-(5-methylpyrazol-3-yl)pyridine (L(4)) and 2-(5-tertbutylpyrazol-3-yl)-6-(5-aminopyrazol-3-yl)pyridine (L(5)) are reported. Iron complex salts of the first four ligands were crystallographically character...

The coordination polymer {[Cu(SiF6)(C10H8N2)2]·2C10H8N2·5H2O} n , systematic name: poly[[bis-(μ2-4,4'-bi-pyridine)(μ2-hexa-fluorido-silicato)copper(II)] 4,4'-bi-pyridine disolvate penta-hydrate], contains pores which are filled with water and 4,4'-bi-pyridine mol-ecules. As a result of the presence of these ordered species, the framework changes its symmetry from P4/mmm to P21/c. The 4,4'-bi-py...

The most widely distributed substituted pyridine compounds in living systems are the pyridine nucleotides. The nicotinamide moiety (Fig. 1, I) of these compounds arises from the indole nucleus of tryptophan in animals, (1, 2) and Neurospora (3, 4), but not in higher plants (5-7) and certain bacteria (8). Pyridine compounds which might be used to study the biosynthesis of the pyridine nucleus ar...

3,5- dinitrobenzoyl chloride-pyridine system has been used for dehydration of aldoximes and carboxamides at room temperature

The highly substituted pyridine derivatives are found to exhibit diverse pharmacological activities. They are also emerged as potential medicinal leads in developing therapeutic agents for the treatment of various diseases. In this work, a series of 2-amino-3,5-dicarbonitrile-6-thio-pyridine derivatives have been synthesized at room temperature via one-pot, multi-component reaction of various a...