cyclic compound

(redirected from heterocyclic compound)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

cy·clic com·pound

any compound in which the constituent atoms, or any part of them, form a ring. Used mainly in organic chemistry where: 1) numerous compounds contain rings of carbon atoms (carbocyclic compounds) or carbon atoms plus one or more atoms of other types (heterocyclic compounds), usually nitrogen, oxygen, or sulfur; 2) where the atoms in the ring are all of the same element (homocyclic or isocyclic compound); 3) where the ring is saturated or contains nonconjugated double bonds (alicyclic compound), the compound is similar in properties to the corresponding acyclic compound (for example, cyclohexane resembles hexane); 4) where the ring contains conjugated double bonds in a closed loop in which there are 4n + 2 (where n is an integer) delocalized π electrons (Hückel rule) (aromatic compound; for example, benzene, pyridine), it is more stable than the corresponding saturated ring and exhibits unusual chemical properties characteristic of itself and not of other types of rings or of acyclic compounds. These aromatic compounds have the ability to sustain an induced ring current.

cy·clic com·pound

(sik'lik kom'pownd)
Any compound in which the constituent atoms, or any part of them, form a ring. Used mainly in organic chemistry.
Synonym(s): closed chain compound.
References in periodicals archive ?
This eventually produces many important classes of flavour compounds including furans, pyrazines, pyrroles, oxazoles, thiophenes, thiazoles and other heterocyclic compounds (Figure 5; Melton, 1999).
These nanoparticles have been found in the synthesis of heterocyclic compounds and their derivatives have widely used in the treatment of hypertension, allergies, and many other popular diseases.
2-Nitrobenzohydrazide is an important intermediate towards the synthesis of a diverse family of heterocyclic compounds including 1,3,4-oxadiazoles [11], 1,2,4-triazoles [12], and 1,3,4-thiadiazoles [13].
The chapters progress through three- to eight-membered heterocycles starting from the natural products to approach the preparation of unnatural heterocyclic compounds with particular attention to bioactive molecules.
In the field of dyes, the heterocyclic compounds play the important role for the most of commercial dyes [1-6].
On the other hand, it is well known that a number of heterocyclic compounds containing pyrazoline-5-one and thiazole moieties exhibit a wide variety of biological activities.
Procedures are in sections on C-C bond formation, oxidation and reduction, heterocyclic compounds, and selected natural products.
As commonly assumed, this may be explained by the presence of the sulfur- and nitrogen-containing heterocyclic compounds that have a tendency to work as some kind of natural accelerators during the vulcanization reaction.
Chemistry of Heterocyclic Compounds (Studies in Organic Chemistry, 35).
In the light of this information, we aimed to synthesize new heterocyclic compounds containing the 1,2,4-triazole ring and to identify the antimicrobial and anti-lipase inhibitory activities of the synthesized compounds.
We bought in 2015 from the UK, particularly medicines for human and veterinary medicine, automobiles, insecticides and heterocyclic compounds.
They address C-C bond formation, oxidation and reduction, heterocyclic compounds, and selected natural products.