heterocyclic compound

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heterocyclic compound

[‚hed·ə·rō′sī·klik ¦käm‚pau̇nd]
(organic chemistry)
Compound in which the ring structure is a combination of more than one kind of atom; for example, pyridine, C5H5N.
References in periodicals archive ?
1995a) noted that, even under the most favourable conditions, aromatic heterocycles could not contribute more than 15% of the total intensity of fungal melanins, indicating they could not be major contributors to the refractory N in SOM.
Heterocycles Derived from the Condensation of Aliphatic Diamines with Succinic and Glutaric Acid Derivatives.
Unprecedented ring-enlargements to four-membered rings by 3+1 -cycloadditions employing isonitriles, carbenes and nitrenes are envisioned, aryne insertions into the three-membered ring leading to indane systems are planned and a general concept for 3+3 -cycloadditions with 1,3-dipoles is presented paving the way to unusual syntheses of heterocycles.
Their topics include the development and design of reactors, selective modifications under microwave irradiation, microwave frequency effects, microwaves in photochemistry and photocatalysis, microwave-assisted heterogeneously catalyzed processes, recent microwave-assisted carbohydrate chemistry, and microwave-assisted multicomponent reactions in the synthesis of heterocycles.
FSI specializes in boronic acids, porphyrins, phthalocyanines, ionic liquids, dendrimers, heterocycles and many other chemical building blocks.
Our approach uses the photofragmentable nitrogen-oxygen bond of a nitrogen onium salt derived from aromatic heterocycles.
Negishi, Professor at Purdue University in Indiana, has published in Heterocycles, Inorganica Chimica Acta ( http://www.
This edition has been updated and expanded to include chapters on organometallic heterocyclic chemistry, heterocyclics in biochemistry and natural products, especially biochemical processes, and in medicine; the use of bioprocesses in heterocyclic transformations, green chemistry and ionic liquids, and applications of heterocyclic compounds in everyday life; and new sections on heterocyclic fluorine compounds, isotopically labeled heterocycles, and solid-phase chemistry, microwave heating, and flow reactors.
To address this concern, a series of novel arylmethylidene heterocycles were synthesized, which included the most recent substance registered by CAS.
Exploration of antileishmanial activity in heterocycles, results of their in vivo and in vitro bioevaluations.
In the Emerging Organic Synthesis Symposium, graduate student Ian Young, ACIC, presented work he has carried out with Michael Kerr, MCIC, at the University of Western Ontario in the development of a new cycloaddition reaction, in which nitrones and cyclopropanes are coupled to make highly functionalized heterocycles.
We are introducing oxetane derivatives (4-membered ethers) 1,6-hexanediol and 1,5-pentanediol; carbonate derivatives, such as dimethylcarbonates and diphenylcarbonates; dicarboxylic acid derivatives; hydroxyamine derivatives; catechol derivatives; and heterocycles.